File	Sha256
kotlin-compiler-1.4.32.zip	dfef23bb86bd5f36166d4ec1267c8de53b3827c446d54e82322c6b6daad3594c
kotlin-native-linux-1.4.32.tar.gz	3712fab4c60484fd8b5538dd018a0023033cb3ea38d2a3023c79b342e4e8b24d
kotlin-native-macos-1.4.32.tar.gz	a55eb3c60bb9810360c5a992dca34328d806fe13f3bfc3120b49345f569fd3cc
kotlin-native-windows-1.4.32.zip	3bd6f1b9293897a45d0b33ee14ca51b33b57d0413b774458c6e4aee393e1b772

File	Sha256
kotlin-compiler-1.4.31.zip	b50e7016febf7510325d685ae69cc62f49a7ca7f670cb4e0888112e3ec09c6ec *
kotlin-native-linux-1.4.31.tar.gz	87fc40385ffbd44eebde6487d15e1c5c67c218870b332b525e122f014b7de3e3
kotlin-native-macos-1.4.31.tar.gz	0e351756b382096204d61456f855480ce6b65ac53897c4bfa78a287895f37e32
kotlin-native-windows-1.4.31.zip	a60aec97fd21294ab11e57acdd33d37d79db11b22656fa435b791e9a709727b4

1.4.303 Feb 2021Deprecated

`KT-40262` ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR

CHANGELOG

Android

KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid

Backend. Native

KT-38772 Native: support non-reified type parameters in typeOf
KT-42234 Move LLVM optimization parameters into konan.properties
KT-42649 IndexOutOfBoundsException during InlineClassTransformer lowering
KT-42942 Native: optimize peak backend memory by clearing BindingContext after psi2ir
KT-43198 Native: support init blocks inside inline classes

Compiler

New Features

KT-28055 Support init blocks inside inline classes
KT-28056 Consider supporting non-public primary constructors for inline classes
KT-41265 Support noarg compiler plugin for JVM IR
KT-42094 Allow open callable members in expect interfaces
KT-43129 FIR: Support OverloadResolutionByLambdaReturnType
KT-43592 Promote JVM IR compiler backend to Beta
KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
KT-44021 Enable JVM IR backend by default in 1.5

Performance Improvements

KT-41352 JVM IR: reduce bytecode size in for loops and range checks with 'until' by not using inclusive end
KT-41644 NI: Infinite compilation
KT-42791 OutOfMemoryError on compilation using kotlin 1.4 on a class with a lot of type inference
KT-42920 NI: Improve performance around adding constraints

Fixes

KT-11454 Load annotations on TYPE_USE/TYPE_PARAMETER positions from Java class-files
KT-11732 Verify error for generic interface method invocation with default parameters
KT-14612 "ISE: Recursive call in a lazy value" during processing of a (weakly) recursive type alias
KT-18344 Upper bound of a typealias type parameter is not reported correctly if it contains the typealias itself
KT-18768 @Notnull annotation from Java does not work with varargs
KT-20548 java.lang.IllegalStateException: Illegal class container on simple Java code parsing
KT-22465 Excessive synthetic method for private setter from superclass
KT-23816 Inline classes: constants and annotations
KT-24158 AE: No receiver found on incomplete code with $-signs
KT-24392 Nullability of Java arrays is read incorrectly if @Nullable annotation has both targets TYPE_USE and VALUE_PARAMETER
KT-26229 Lambda/anonymous function argument in parentheses is not supported for callsInPlace effect
KT-29735 KNPE at KtEnumEntrySuperclassReferenceExpression.getReferencedElement with explicit type argument inside enum member constructor
KT-31389 ClassFormatError with companion object in annotation with @JvmStatic
KT-31907 ISE: UNIT_EXPECTED_TYPE on parsing array literal inside lambda with Unit return type
KT-32228 Inconsistent boxing/unboxing for inline classes when interface is specialized by object expression
KT-32450 Inline class incorrectly gets re-wrapped when provided to a function
KT-35849 Missing nullability assertion on lambda return value if expected type has generic return value type
KT-35902 Kotlin generates a private parameterless constructor for constructors taking inline class arguments with default values
KT-36399 Gradually support TYPE_USE nullability annotations read from class-files
KT-36769 JVM IR: Missing LVT entries for inline function (default) parameters at call site
KT-36982 JVM IR: SAM adapter classes are generated as synthetic
KT-37007 JVM IR: extraneous property accessors are generated in multifile facade for InlineOnly property
KT-37317 [FIR] Add support of extension functions in postponed lambda completion
KT-38400 FIR: interface abstract is preferred to Any method in super resolve
KT-38536 JVM IR: bound adapted function references are not inlined
KT-38656 FIR: determine overridden member visibility properly
KT-38901 FIR: Make behavior of integer literals overflow consistent with FE 1.0
KT-39709 [FIR] False positive UNINITIALIZED_VARIABLE in presence of complex graph with jumps
KT-39923 Result.Failure will get wrapped with Success when using with RxJava
KT-40198 '$default' methods in 'kotlin/test/AssertionsKt' generated as non-synthetic by JVM_IR
KT-40200 IDE: Multiple top-level main functions in different files: broken highlighting, "No descriptor resolved for FUN"
KT-40262 ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR
KT-40282 Inline class wrapping Any gets double boxed
KT-40464 JVM_IR does not generate LINENUMBER at closing brace of (suspend) lambda
KT-40500 Warnings reporting by Java nullability annotations doesn't work for not top-level types
KT-40926 IDE import actions do not add required import for convention invoke() extension call
KT-40948 IllegalAccessError while initializing val property in EXACTLY_ONCE lambda that is passed to another function
KT-40991 NI: UNRESOLVED_REFERENCE_WRONG_RECEIVER instead of FUNCTION_EXPECTED with convention invoke call
KT-41163 Double wrapped value in Result class after map operation
KT-41284 Spring CGLIB proxies break auto-generated data class componentN and copy methods when using JVM IR
KT-41468 JVM IR: IllegalAccessError on access to abstract base member from another package, from anonymous object inside abstract class
KT-41491 UNRESOLVED_REFERENCE_WRONG_RECEIVER instead of FUNCTION_EXPECTED when invoking non-functional value as a function
KT-41493 JVM IR: names of classes for local delegated variables contain the variable name twice
KT-41792 [FIR] Introduce & use ConeAttribute.UnsafeVariance
KT-41793 [FIR] Make captured types accessible at the end of resolve
KT-41809 JVM IR: name for internal $default method doesn't include module name
KT-41810 JVM IR: Deprecated(HIDDEN) class is incorrectly generated as synthetic
KT-41841 JVM IR: delegates for private functions with default arguments are generated in multifile classes
KT-41857 Flaky 'ConcurrentModificationException' through kotlin.serialization.DescriptorSerializer
KT-41903 JVM IR: do not generate LineNumberTable in auto-generated members of data classes
KT-41911 JVM IR: nested big-arity function calls are not lowered
KT-41957 JVM IR: step into suspend function goes to the first line of the file
KT-41960 JVM IR: smart step into members implemented with delegation to interface doesn't work
KT-41961 JVM IR: line numbers are not generated in JvmMultifileClass facade declarations
KT-41962 JVM IR: intermittent -1 line numbers in the state machine cause double stepping in the debugger
KT-42001 Cannot resolve symbol: AssertionError: Module <sdk 1.8> is not contained in his own dependencies
KT-42002 JVM / IR: IllegalStateException: "No mapping for symbol: VAR IR_TEMPORARY_VARIABLE" caused by named arguments
KT-42021 JVM / IR: "IndexOutOfBoundsException: Index 0 out of bounds for length 0" during IR lowering with suspend conversion
KT-42033 JVM IR: accidental override in Map subclass with custom implementations of some members
KT-42036 IR: "AssertionError: TypeAliasDescriptor expected: deserialized class Nothing" when referencing typealias with @UnsafeVariance
KT-42043 JVM IR: Don't generate collection stubs when implementing methods with more specific return types
KT-42044 Compiler error when lambda with contract surrounded with parentheses
KT-42114 JVM_IR generates stub for 'removeIf' in abstract classes implementing 'List' and 'Set'
KT-42115 JVM_IR doesn't generate 'next' and 'hasNext' method in an abstract class implementing 'ListIterator'
KT-42116 FIR: Java accessor function should not exist in scope together with relevant property
KT-42117 IR-based evaluator cannot handle Java static final fields
KT-42118 FIR2IR: field-targeted annotation is placed on a property, not on a field
KT-42130 FIR: type variable is observed after when condition analysis
KT-42132 FIR2IR: companion function reference has no dispatch receiver
KT-42137 JVM IR: AbstractMethodError on complex hierarchy where implementation comes from another supertype and has a more specific type
KT-42186 JVM / IR: Infinite cycle in for expression when unsigned bytes are used in decreasing loop range
KT-42251 JVM / IR: "IllegalStateException: Descriptor can be left only if it is last" when comparing the i-th element of the container of Int? and i with change
KT-42253 JVM IR: NoSuchFieldError on local delegated property in inline function whose call site happens before declaration in the source
KT-42281 JVM / IR: AnalyzerException when comparing Int and array that cast to Any in if condition
KT-42340 FIR2IR: duplicating fake overrides
KT-42344 IR-based evaluator doesn't support "annotation in annotation"
KT-42346 FIR: double-vararg in IR while resolving collection literal as Java annotation argument
KT-42348 FIR: false UNINITIALIZED_VARIABLE in local class
KT-42350 FIR: false UNINITIALIZED_VARIABLE after initialization in try block
KT-42351 FIR: false HIDDEN in enum entry member call
KT-42354 JVM / IR: "AssertionError: Unexpected IR element found during code generation" with KProperty get invocation
KT-42359 FIR2IR: cannot mangle type parameter
KT-42373 FIR2IR: local object nested class has no parent if forward-referenced by nested class supertype
KT-42384 FIR (BE): top-level field has no parent class in BE
KT-42496 FIR resolve: synthetic property is written but has no setter
KT-42517 FIR: exception in BE for recursive inline call
KT-42530 "AssertionError: No type for resolved lambda argument" on attempting to assign a Pair to a couple of values in a scratch file
KT-42601 [FIR] Inherited declaration clash for stdlib inheritors
KT-42622 NI: IllegalStateException for if expression with method reference inside flow
KT-42642 ISE: No getProgressionLastElement for progression type IntProgressionType
KT-42650 JVM IR: extraneous nullability annotation on a generic function of a flexible type
KT-42656 FIR2IR: unsupported callable reference for Java field
KT-42725 Debugger steps into core library inline functions in chained calls
KT-42758 JVM / IR: Deserialized object that overrides readResolve() is not reference equal to the singleton instance
KT-42770 FIR: duplicating signatures in mangler (typealias for functional type)
KT-42771 FIR: duplicating signature in mangler (data class with delegate)
KT-42814 FIR: false UNINITIALIZED_VARIABLE in local function after if...else
KT-42844 FIR: Property write in init block resolved to parameter write
KT-42846 JVM_IR: NPE on function reference to @JvmStatic method in a different file
KT-42933 JVM / IR: "AnalyzerException: Expected an object reference, but found I" with local delegate in inline class
KT-43006 JVM/JVM_IR: do not generate no-arg constructor for constructor with default arguments if there are inline class types in the signature
KT-43017 JVM / IR: AssertionError when callable reference passed into a function requiring a suspendable function
KT-43051 JVM IR: extraneous methods overridding default (Java 8) collection methods in inline class that extends MutableList
KT-43067 Inner class declaration inside inline class should be prohibited
KT-43068 JVM IR: no generic signatures for explicitly written methods in a List subclass, whose signature coincides with MutableList methods
KT-43132 JVM / IR: Method name '<get-...>' in class '...$screenTexts$1$1' cannot be represented in dex format.
KT-43145 JVM IR: $default methods in multi-file facades are generated as non-synthetic final
KT-43156 FIR: false UNINITIALIZED_VARIABLE after initialization in synchronized block
KT-43196 JVM: extra non-static member is generated for extension property in inline class
KT-43199 JVM IR: synthetic flag for deprecated-hidden is not generated for DeprecatedSinceKotlin and deprecation from override
KT-43207 JVM IR: no collection stub for iterator is generated on extending AbstractCollection
KT-43217 JVM_IR: Multiple FAKE_OVERRIDES for java methods using @NonNull Double and java double
KT-43225 Confusing message of warning NULLABLE_TYPE_PARAMETER_AGAINST_NOT_NULL_TYPE_PARAMETER
KT-43226 "Incompatible stack heights" with non-local return to outer lambda inside suspend lambda
KT-43242 JVM / IR: "AnalyzerException: Expected I, but found R" caused by when inside object with @Nullable Integer subject
KT-43249 Wrong code generated for suspend lambdas with inline class parameters
KT-43286 JVM IR: IAE "Inline class types should have the same representation: Lkotlin/UInt; != I" on smart cast of unsigned type value with JVM target 1.8
KT-43326 JVM_IR: No deprecated flag for getter of deprecated interface property copied to DefaultImpls
KT-43327 JVM_IR: No deprecated or synthetic flag for accessors of deprecated-hidden property of unsigned type
KT-43332 FIR: Smart casts lead to false-positive ambiguity
KT-43370 JVM IR: No deprecated flag for getter of deprecated property copied via delegation by interface
KT-43459 JVM_IR. Wrong signature for synthetic $annotations method for extension property on nullable primitive
KT-43478 NI: "IndexOutOfBoundsException: Index: 3, Size: 3" caused by is check with raw type inside if condition with when inside
KT-43519 JVM_IR. External functions generated differently in multi file facades
KT-43524 JVM_IR. Missed deprecation flag on companion @JvmStatic property accessor
KT-43525 Prohibit JvmOverloads on declarations with inline class types in parameters
KT-43536 JVM IR: IllegalStateException is not caught by runCatching under Deferred.await() with kotlinx.coroutines
KT-43562 JVM IR: incorrect mangling for Collection.size in unsigned arrays
KT-43584 [FIR] Java annotations with named arguments aren't loaded correctly
KT-43587 Invalid default parameter value in expect actual declaration on jvm
KT-43630 "AssertionError: Number of arguments should not be less than number of parameters" during capturing intersection raw type with star projection
KT-43698 NoSuchMethodError for inline class implementing interface with @JvmDefault methods, -Xjvm-default=enable
KT-43741 Report error on inline class implementing 'kotlin.Cloneable'
KT-43845 org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate expression: KtBlockExpression
KT-43956 NI: "Error type encountered – UninferredParameterTypeConstructor" on "try" and other constructs with code block as a value
KT-44055 Left uninferred type parameter for callable references inside special calls
KT-44113 Compiler frontend exception: Number of arguments should not be less than number of parameters, but: parameters=2, args=1
KT-44145 No highlighting for not initialized base constructor and NoSuchMethodError in Android plugin
KT-44540 Regression in 1.4.30 in intellij-community: type mismatch for generic function call with generic Java class
KT-44563 Type Inference loosing type annotations in lambda type expectation for function calls with block parameters

IDE

New Features

KT-44075 Sealed interfaces: New Kotlin Class/File menu update

Fixes

KT-29454 Light class with unexpected name when using obfuscated library
KT-31553 Complete Statement: Wrong auto-insertion of closing curly brace for a code block
KT-33466 IDE generates incorrect external override with body for overriding open external method
KT-39458 Add CLI support for UL classes
KT-40403 UAST: PsiMethod for invoked extension function/property misses @receiver: annotations
KT-41406 Kotlin doesn't report annotations for type arguments (no way to add @Nls, @NonNls annotations to String collections in Kotlin)
KT-41420 UAST does not return information about type annotations
KT-42194 OOME: Java heap space from incremental compilation
KT-42754 MPP: no smart cast for Common nullable property used in platform module
KT-42821 MPP, IDE: Platform-specific errors are reported even when build doesn't target that platform
KT-44116 Add language version 1.5 to the compiler configuration preferences
KT-44523 IDE notification for trying new JVM backend
KT-44543 Kotlin's LowMemoryWatcher leaks on Kotlin plugin unload

IDE. Android

KT-42381 MPP: Bad IDEA dependencies: JVM module depending on built artifact instead of sources of module with Android Plugin applied

IDE. Completion

KT-44016 Code completion: support for "sealed interface"
KT-44250 Code completion does not work in when expression with sealed type argument

IDE. Gradle. Script

KT-39105 AE “JvmBuiltins has not been initialized properly” after creating new Gradle/Kotlin-based project via old Project Wizard

IDE. Inspections and Intentions

New Features

KT-22666 "Create enum constant" quick fix could be provided
KT-24556 Add Remove quick fix for "Expression under 'when' is never equal to null"
KT-34121 Report unused result of data class copy method
KT-34533 INLINE_CLASS_CONSTRUCTOR_NOT_FINAL_READ_ONLY_PARAMETER: Add quickfix "Add val to parameter"
KT-35215 Quickfix for CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT to remove const modifier
KT-40251 Intention action to evaluate compile time expression
KT-44017 Sealed interfaces: Java side Inspection "implementation of Kotlin sealed interface is forbidden"
KT-43941 Sealed interfaces: intention to extend class/interface
KT-44043 Sealed interfaces: quickfix to move class/interface to proper location

Fixes

KT-20420 Intention "Put arguments/parameters on separate lines" doesn't respect the "Place ')' on new line" Kotlin code style setting
KT-21799 Quickfix "Change function signature" for receiver type doesn't change it
KT-22665 "Create object" quick fix produce wrong code for enum
KT-23934 IntelliJ suggest "merge map to joinToString" even when such action is impossible due to suspending actions in map
KT-30894 Wrong results of intention "Add names to call arguments" when backticked argument starts from digit
KT-31523 ReplaceWith introduces additional argument name for lambda when named argument is used on call-site
KT-31833 JavaMapForEachInspection should report for expression with implicit receiver
KT-33096 Turn 'MapGetWithNotNullAssertionOperator' into an intention
KT-33212 False positive "map.put() should be converted to assignment" inspection when class inherited from MutableMap has "set" method
KT-34270 False negative "Join declaration and assignment" with constructor call
KT-34859 False positive "Should be replaced with Kotlin function" inspection for Character.toString(int) function
KT-34959 False positive "Redundant overriding method" with different implemented/overridden signatures
KT-35051 False positive "Remove redundant backticks" if variable inside the string and isn't followed by space
KT-35097 False positive "Call replaceable with binary operator" on explicit 'equals' call on a platform type value
KT-35165 "Replace 'if' with elvis operator": don't suggest if val initializer is a complex expression
KT-35346 False positive 'Make internal' suggestion for function inside interface
KT-35357 "Move lambda argument out of parentheses" does not preserve block comments
KT-38349 Invalid suggestion to fold to elvis when having a var-variable
KT-40704 False negative "Redundant semicolon" at start of line
KT-40861 "Convert to secondary constructor" intention expected on class name
KT-40879 False positive "Redundant 'inner' modifier" when calling another inner class with empty constructor
KT-40985 "Remove explicit type arguments" is suggested when type has an annotation
KT-41223 False positive "Redundant inner modifier" inspection ignores constructor arguments of object expressions
KT-41246 False positive "Receiver parameter is never used" with anonymous function expression
KT-41298 "Remove redundant 'with' call" intention works incorrectly with non-local returns and single-expression functions
KT-41311 False positive "Redundant inner modifier" when deriving from a nested Java class
KT-41499 "Convert receiver to parameter" produces code with incorrect order of generic type and function invocation in case of generic function with lambda as a parameter
KT-41680 False positive "Redundant inner modifier" when deriving from class with non-empty constructor and value passed to it from enclosing class
KT-42201 Add Opt-In action doesn't work if there is already OptIn annotation
KT-42255 "Replace elvis expression with 'if' expression" intention shouldn't introduce unnecessary variable if 'error' expression is used

IDE. JS

KT-43760 KJS: Debugging Kotlin code for Node.js runtime doesn't work

IDE. Misc

KT-44018 Sealed interfaces: IDE side implementation for hierarchy provider

IDE. Multiplatform

KT-40814 MISSING_DEPENDENCY_CLASS when consuming native-shared library in a source-set with fewer targets than library has

IDE. Run Configurations

KT-34535 Unable to run common tests on Android via gutter icon in a multiplatform project

IDE. Scratch

KT-25038 Scratch: Destructuring declaration produces an unresolved reference
KT-43415 Kotlin scratch file could not be run and could lead to dead lock

IDE. Script

KT-44117 IDE / Scripts: custom kotlin script definitions aren't loaded

JavaScript

Fixes

KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner
KT-39964 Throwable incorrectly implements constructor for (null, cause) args in K/JS-IR
KT-40090 KJS: IR. Invalid behaviour for optional parameters (redundant tail undefined parameters)
KT-40686 KJS: Uncaught ReferenceError caused by external class as type inside eventListener in init block
KT-40771 KJS / IR: "ReferenceError: Metadata is not defined" caused by default parameter value in inner class constructor
KT-41032 KJS / IR: "AssertionError: Assertion failed" caused by class that is delegated to inherited interface
KT-41076 KJS / IR: "AssertionError: Assertion failed" caused by overridden extensiion function in child class
KT-41771 KJS / IR: IndexOutOfBoundsException "Index 0 out of bounds for length 0" caused by inline class with List in primary constructor and vararg in secondary
KT-42025 KJS / IR: IrConstructorCallImpl: No such type argument slot: 0
KT-42112 KJS: StackOverflowError on @JsExport in case of name clash with function with Enum parameter with star-projection
KT-42262 KJS: break-statements without label are ignored in a when
KT-42357 KotlinJS - external class constructor with vararg does not correctly handle spread operator.
KT-42364 KJS: Properties of interface delegate are non-configurable
KT-43212 JS IR: support init blocks inside inline classes
KT-43222 KJS IR: prototype lazy initialization for top-level properties like in JVM
KT-43313 KJS / IR: "Can't find name for declaration FUN" for secondary constructor
KT-43901 Call to enum values() method from enum companion object leads to non-initialized enum instances

KMM Plugin

KT-41677 Could not launch iOS project with custom display name
KT-42463 Launch common tests for Android on local JVM via run gutter
KT-43188 NoSuchMethodError in New Module Wizard of KMM Project

Libraries

KT-41112 Docs: add more details about bit shift operations
KT-41278 map.entries.contains can return false if the argument is not MutableEntry
KT-41356 Incorrect documentation for rangeTo function
KT-44456 Introduce locale-agnostic API for case conversions
KT-44458 Introduce new Char-to-code and Char-to-digit conversions

Middle-end. IR

KT-41765 [Native/IR] Could not resolveFakeOverride()
KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

KT-44219 1.4.30-M1: Non-reified type parameters with recursive bounds are not supported yet
KT-44271 [Kotlin/Native] Incorrect linking when targeting linux_x64 from mingw_x64 host

Native. C and ObjC Import

KT-42412 [C-interop] Modality of generated property accessors is always FINAL

Native. ObjC Export

KT-38530 Native: values() method of enum classes is not exposed to Objective-C/Swift
KT-43599 K/N: Unbound symbols not allowed

Native. Platform libraries

KT-43597 Support for Xcode 12.2 SDK

Native. Platforms

KT-43276 Support watchos_x64 target

Native. Runtime

KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets

Native. Stdlib

KT-42172 Kotlin/Native: StableRef.dispose race condition on Kotlin deinitRuntime
KT-42428 Inconsistent behavior of map.entries on Kotlin.Native

Reflection

KT-34024 "KotlinReflectionInternalError: Inconsistent number of parameters" with javaMethod on suspending functions with inline class in function signature or inside the function

Tools. CLI

KT-43294 Support -no-stdlib option for the kotlin runner
KT-43406 JVM: produce deterministic jar files if -d option value is a .jar file

Tools. CLI. Native

KT-40670 Allow to override konan.properties via CLI

Tools. Compiler Plugins

KT-41764 KJS /IR IllegalStateException: "Symbol for public kotlin/arrayOf is unbound" with serialization plugin
KT-42976 kotlinx.serialization + JVM IR: NPE on annotation with @SerialInfo
KT-43725 Prohibit inner and local classes in kotlin-noarg

Tools. Gradle

KT-38692 KaptGenerateStubs Gradle task will not clean up outputs when sources are empty and not an incremental build
KT-40140 kotlin-android plugin eagerly creates several Gradle tasks
KT-41295 Kotlin Gradle Plugin 1.4.20 Configuration Caching bug due to friendPath provider
KT-42058 Support moduleName option in Kotlin Gradle plugin for JVM
KT-43054 Implementation of AbstractKotlinTarget#buildAdhocComponentsFromKotlinVariants breaks configuration caching
KT-43489 Incremental compilation - unable to find history files causing full recompilation
KT-43740 Gradle out-of-process runner fails with unclear diagnostics if build directory does not exist
KT-43895 Fix cacheability warnings for the Kotlin plugins

Tools. Gradle. JS

KT-42400 Kotlin/JS: Gradle DSL: customField() is rejected in Groovy build.gradle
KT-42462 NPM dependency declaration with Groovy interpolated string
KT-42954 Kotlin/JS: IDE import after changing kotlin.js.externals.output.format does not re-generate externals
KT-43535 Common webpack configuration breaks on lambda serialization in some cases
KT-43668 PackageJson task use file dependencies as is (files and directories), but only files necessary
KT-43793 nodeArgs in NodeJsExec task
KT-43842 KJS: Invalid output.library support for null value
KT-44104 KJS / Gradle: An ability to pass jvm args to K2JSDce process

Tools. Gradle. Multiplatform

KT-42269 Setup default dependsOn edges for Android source sets
KT-42413 [MPP/gradle] withJava breaks build on 1.4.20-M1
KT-43141 Gradle / Configuration cache: NPE from org.jetbrains.kotlin.gradle.tasks.KotlinCompileCommon.getKotlinOptions() on reusing configuration cache for task compileCommonMainKotlinMetadata
KT-43329 Gradle / Configuration cache: IAE “Parameter specified as non-null is null: method KotlinMetadataTargetConfiguratorKt.isCompatibilityMetadataVariantEnabled, parameter $this$isCompatibilityMetadataVariantEnabled” on reusing configuration cache for task compileKotlinMetadata
KT-44298 Kotlin 1.4.20+ MPP "root" module publication does not include the source JAR that used to be published in the -metadata modules

Tools. Gradle. Native

KT-39564 Make kotlin-native Gradle tasks Cacheable
KT-42485 Fail on cinterop: clang_indexTranslationUnit returned 1
KT-42550 Adding subspec dependency with git location failed
KT-42849 Gradle / Configuration cache: tasks nativeMetadataJar, runReleaseExecutableNative, runDebugExecutableNative are unsupported and fails on reusing configuration cache
KT-42938 CocoaPods Gradle plugin: podBuildDependencies doesn't properly report xcodebuild failures
KT-43151 Gradle / Configuration cache: UPAE “lateinit property binary has not been initialized” on reusing configuration cache for linkDebugExecutableNative, linkDebugTestNative, linkReleaseExecutableNative tasks
KT-43516 Failed to resolve Kotin library [Multiple Multiplatform modules]

Tools. Incremental Compile

KT-42937 another compilation fail (problem with compilation caches?)

Tools. JPS

KT-39536 JPS compilation fails with IOException "storage is already closed"

Tools. Parcelize

KT-41553 JVM IR, Parcelize: IrStarProjectionImpl cannot be cast to class IrTypeProjection

Tools. Scripts

KT-43534 Allow running "main.kts" script that does not end in a "main.kts" filename (would allow kotlin scripting on GitHub Actions)
KT-43176 NoSuchMethodError: 'int Script.access$getAValue$p(Script) for not-inlined functions
KT-43294 Support -no-stdlib option for the kotlin runner

Tools. kapt

KT-34340 Incremental annotation processor recompile all files (only if KAPT enabled).
KT-36667 Kapt: Add a flag to strip kotlin.Metadata() annotations from stubs
KT-40493 KAPT does not support aggregating annotations processors in incremental mode
KT-40882 Kapt stub generation is non-deterministic for incremental compilation
KT-41788 NullPointerException: Random crashes of build using gradle and kapt because of not calling Processor.init()
KT-42182 KAPT: Does not consider generated sources for incremental compilation.

Checksums

File	Sha256
kotlin-compiler-1.4.30.zip	7b0aae9dca5ea899ef05dedc0a6fdd6e359451e56ff0dd3354443b3208b31800
kotlin-native-linux-1.4.30.tar.gz	51c12099acf2e2131f063659c59d5f78daaba5c9bc39cc92289d962359e8ccce
kotlin-native-macos-1.4.30.tar.gz	892afbf069483b355933885c931367aaaaa32dfe26d84bbfd8636f90f0c7b556
kotlin-native-windows-1.4.30.zip	6c56581902e094c0b1b292abb854d314d5cee650528f23015f8390301fa84ae2

Open source →

File	Sha256
kotlin-compiler-1.4.30-RC.zip	d0103f8d3ffe4545a2bcff8b01b348e45b4338387768c7c25901275a9c918691
kotlin-native-prebuilt-linux-1.4.30-RC.tar.gz	07f9bedf68b65d59042d9c24d1157836bd9a8a94b9da49e2b2b7871d90995cbf
kotlin-native-prebuilt-macos-1.4.30-RC.tar.gz	e2c3bd19aec8eed8a8fbf55e6b213f1ea37f97457a7cb08fd71ff9d865fc01ec
kotlin-native-prebuilt-windows-1.4.30-RC.zip	31e358d21f046b89b0aee82bd82814480ba41b6556c9f31066af8fbb9aa3d3a0

1.4.30-M122 Dec 2020pre-releaseDeprecated

`KT-40262` ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR

You could find information about EAP program and setup instructions here

CHANGELOG

1.4.30-M1

Android

KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid

Backend. Native

KT-38772 Native: support non-reified type parameters in typeOf
KT-42234 Move LLVM optimization parameters into konan.properties
KT-42649 IndexOutOfBoundsException during InlineClassTransformer lowering
KT-42942 Native: optimize peak backend memory by clearing BindingContext after psi2ir
KT-43198 init blocks inside inline classes
KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner

Backend. JS

KT-41227 KJS IR: don't copy to child's prototype references to the function from parent

Backend. IR

KT-41227 KJS IR: don't copy to child's prototype references to the function from parent

Compiler

New Features

KT-28055 Consider supporting init blocks inside inline classes
KT-28056 Consider supporting non-public primary constructors for inline classes
KT-42094 Allow open callable members in expect interfaces
KT-43129 FIR: Support OverloadResolutionByLambdaReturnType

Performance Improvements

KT-41352 JVM IR: reduce bytecode size in for loops and range checks with 'until' by not using inclusive end
KT-41644 NI: Infinite compilation
KT-42791 OutOfMemoryError on compilation using kotlin 1.4 on a class with a lot of type inference
KT-42920 NI: Improve performance around adding constraints

Fixes

KT-22465 Excessive synthetic method for private setter from superclass
KT-26229 Lambda/anonymous function argument in parentheses is not supported for callsInPlace effect
KT-32228 Inconsistent boxing/unboxing for inline classes when interface is specialized by object expression
KT-32450 Inline class incorrectly gets re-wrapped when provided to a function
KT-35849 Missing nullability assertion on lambda return value if expected type has generic return value type
KT-35902 Kotlin generates a private parameterless constructor for constructors taking inline class arguments with default values
KT-36769 JVM IR: Missing LVT entries for inline function (default) parameters at call site
KT-36982 JVM IR: SAM adapter classes are generated as synthetic
KT-37007 JVM IR: extraneous property accessors are generated in multifile facade for InlineOnly property
KT-37317 [FIR] Add support of extension functions in postponed lambda completion
KT-38400 FIR: interface abstract is preferred to Any method in super resolve
KT-38536 JVM IR: bound adapted function references are not inlined
KT-38656 FIR: determine overridden member visibility properly
KT-38901 FIR: Make behavior of integer literals overflow consistent with FE 1.0
KT-39709 [FIR] False positive UNINITIALIZED_VARIABLE in presence of complex graph with jumps
KT-39923 Result.Failure will get wrapped with Success when using with RxJava
KT-40198 '$default' methods in 'kotlin/test/AssertionsKt' generated as non-synthetic by JVM_IR
KT-40262 ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR
KT-40282 Inline class wrapping Any gets double boxed
KT-40464 JVM_IR does not generate LINENUMBER at closing brace of (suspend) lambda
KT-40948 IllegalAccessError while initializing val property in EXACTLY_ONCE lambda that is passed to another function
KT-41468 JVM IR: IllegalAccessError on access to abstract base member from another package, from anonymous object inside abstract class
KT-41493 JVM IR: names of classes for local delegated variables contain the variable name twice
KT-41792 [FIR] Introduce & use ConeAttribute.UnsafeVariance
KT-41793 [FIR] Make captured types accessible at the end of resolve
KT-41809 JVM IR: name for internal $default method doesn't include module name
KT-41810 JVM IR: Deprecated(HIDDEN) class is incorrectly generated as synthetic
KT-41841 JVM IR: delegates for private functions with default arguments are generated in multifile classes
KT-41857 Flaky 'ConcurrentModificationException' through kotlin.serialization.DescriptorSerializer
KT-41903 JVM IR: do not generate LineNumberTable in auto-generated members of data classes
KT-41957 JVM IR: step into suspend function goes to the first line of the file
KT-41960 JVM IR: smart step into members implemented with delegation to interface doesn't work
KT-41961 JVM IR: line numbers are not generated in JvmMultifileClass facade declarations
KT-41962 JVM IR: intermittent -1 line numbers in the state machine cause double stepping in the debugger
KT-42002 JVM / IR: IllegalStateException: "No mapping for symbol: VAR IR_TEMPORARY_VARIABLE" caused by named arguments
KT-42021 JVM / IR: "IndexOutOfBoundsException: Index 0 out of bounds for length 0" during IR lowering with suspend conversion
KT-42033 JVM IR: accidental override in Map subclass with custom implementations of some members
KT-42043 JVM IR: Don't generate collection stubs when implementing methods with more specific return types
KT-42044 Compiler error when lambda with contract surrounded with parentheses
KT-42114 JVM_IR generates stub for 'removeIf' in abstract classes implementing 'List' and 'Set'
KT-42115 JVM_IR doesn't generate 'next' and 'hasNext' method in an abstract class implementing 'ListIterator'
KT-42116 FIR: Java accessor function should not exist in scope together with relevant property
KT-42117 IR-based evaluator cannot handle Java static final fields
KT-42118 FIR2IR: field-targeted annotation is placed on a property, not on a field
KT-42130 FIR: type variable is observed after when condition analysis
KT-42132 FIR2IR: companion function reference has no dispatch receiver
KT-42137 JVM IR: AbstractMethodError on complex hierarchy where implementation comes from another supertype and has a more specific type
KT-42186 JVM / IR: Infinite cycle in for expression when unsigned bytes are used in decreasing loop range
KT-42251 JVM / IR: "IllegalStateException: Descriptor can be left only if it is last" when comparing the i-th element of the container of Int? and i with change
KT-42253 JVM IR: NoSuchFieldError on local delegated property in inline function whose call site happens before declaration in the source
KT-42281 JVM / IR: AnalyzerException when comparing Int and array that cast to Any in if condition
KT-42340 FIR2IR: duplicating fake overrides
KT-42344 IR-based evaluator doesn't support "annotation in annotation"
KT-42346 FIR: double-vararg in IR while resolving collection literal as Java annotation argument
KT-42348 FIR: false UNINITIALIZED_VARIABLE in local class
KT-42350 FIR: false UNINITIALIZED_VARIABLE after initialization in try block
KT-42351 FIR: false HIDDEN in enum entry member call
KT-42354 JVM / IR: "AssertionError: Unexpected IR element found during code generation" with KProperty get invocation
KT-42359 FIR2IR: cannot mangle type parameter
KT-42373 FIR2IR: local object nested class has no parent if forward-referenced by nested class supertype
KT-42384 FIR (BE): top-level field has no parent class in BE
KT-42496 FIR resolve: synthetic property is written but has no setter
KT-42517 FIR: exception in BE for recursive inline call
KT-42601 [FIR] Inherited declaration clash for stdlib inheritors
KT-42642 ISE: No getProgressionLastElement for progression type IntProgressionType
KT-42650 JVM IR: extraneous nullability annotation on a generic function of a flexible type
KT-42656 FIR2IR: unsupported callable reference for Java field
KT-42725 Debugger steps into core library inline functions in chained calls
KT-42758 JVM / IR: Deserialized object that overrides readResolve() is not reference equal to the singleton instance
KT-42770 FIR: duplicating signatures in mangler (typealias for functional type)
KT-42771 FIR: duplicating signature in mangler (data class with delegate)
KT-42814 FIR: false UNINITIALIZED_VARIABLE in local function after if...else
KT-42844 FIR: Property write in init block resolved to parameter write
KT-42846 JVM_IR: NPE on function reference to @JvmStatic method in a different file
KT-42933 JVM / IR: "AnalyzerException: Expected an object reference, but found I" with local delegate in inline class
KT-43006 JVM/JVM_IR: do not generate no-arg constructor for constructor with default arguments if there are inline class types in the signature
KT-43017 JVM / IR: AssertionError when callable reference passed into a function requiring a suspendable function
KT-43068 JVM IR: no generic signatures for explicitly written methods in a List subclass, whose signature coincides with MutableList methods
KT-43132 JVM / IR: Method name '<get-...>' in class '...$screenTexts$1$1' cannot be represented in dex format.
KT-43145 JVM IR: $default methods in multi-file facades are generated as non-synthetic final
KT-43156 FIR: false UNINITIALIZED_VARIABLE after initialization in synchronized block
KT-43196 JVM: extra non-static member is generated for extension property in inline class
KT-43199 JVM IR: synthetic flag for deprecated-hidden is not generated for DeprecatedSinceKotlin and deprecation from override
KT-43207 JVM IR: no collection stub for iterator is generated on extending AbstractCollection
KT-43217 JVM_IR: Multiple FAKE_OVERRIDES for java methods using @NonNull Double and java double
KT-43226 "Incompatible stack heights" with non-local return to outer lambda inside suspend lambda
KT-43242 JVM / IR: "AnalyzerException: Expected I, but found R" caused by when inside object with @Nullable Integer subject
KT-43249 Wrong code generated for suspend lambdas with inline class parameters
KT-43286 JVM IR: IAE "Inline class types should have the same representation: Lkotlin/UInt; != I" on smart cast of unsigned type value with JVM target 1.8
KT-43326 JVM_IR: No deprecated flag for getter of deprecated interface property copied to DefaultImpls
KT-43327 JVM_IR: No deprecated or synthetic flag for accessors of deprecated-hidden property of unsigned type
KT-43332 FIR: Smart casts lead to false-positive ambiguity
KT-43370 JVM IR: No deprecated flag for getter of deprecated property copied via delegation by interface
KT-43525 Prohibit JvmOverloads on declarations with inline class types in parameters
KT-43562 JVM IR: incorrect mangling for Collection.size in unsigned arrays
KT-43584 [FIR] Java annotations with named arguments aren't loaded correctly

IDE

KT-31553 Complete Statement: Wrong auto-insertion of closing curly brace for a code block
KT-33466 IDE generates incorrect external override with body for overriding open external method
KT-39458 Add CLI support for UL classes
KT-40403 UAST: PsiMethod for invoked extension function/property misses @receiver: annotations
KT-41406 Kotlin doesn't report annotations for type arguments (no way to add @Nls, @NonNls annotations to String collections in Kotlin)
KT-41420 UAST does not return information about type annotations
KT-42754 MPP: no smart cast for Common nullable property used in platform module
KT-42821 MPP, IDE: Platform-specific errors are reported even when build doesn't target that platform

IDE. Android

KT-42381 MPP: Bad IDEA dependencies: JVM module depending on built artifact instead of sources of module with Android Plugin applied

IDE. Inspections and Intentions

New Features

KT-22666 "Create enum constant" quick fix could be provided
KT-24556 Add Remove quick fix for "Expression under 'when' is never equal to null"
KT-34121 Report unused result of data class copy method
KT-34533 INLINE_CLASS_CONSTRUCTOR_NOT_FINAL_READ_ONLY_PARAMETER: Add quickfix "Add val to parameter"
KT-35215 Quickfix for CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT to remove const modifier
KT-40251 Intention action to evaluate compile time expression

Fixes

KT-20420 Intention "Put arguments/parameters on separate lines" doesn't respect the "Place ')' on new line" Kotlin code style setting
KT-21799 Quickfix "Change function signature" for receiver type doesn't change it
KT-22665 "Create object" quick fix produce wrong code for enum
KT-23934 IntelliJ suggest "merge map to joinToString" even when such action is impossible due to suspending actions in map
KT-30894 Wrong results of intention "Add names to call arguments" when backticked argument starts from digit
KT-31523 ReplaceWith introduces additional argument name for lambda when named argument is used on call-site
KT-31833 JavaMapForEachInspection should report for expression with implicit receiver
KT-33096 Turn 'MapGetWithNotNullAssertionOperator' into an intention
KT-33212 False positive "map.put() should be converted to assignment" inspection when class inherited from MutableMap has "set" method
KT-34270 False negative "Join declaration and assignment" with constructor call
KT-34859 False positive "Should be replaced with Kotlin function" inspection for Character.toString(int) function
KT-34959 False positive "Redundant overriding method" with different implemented/overridden signatures
KT-35051 False positive "Remove redundant backticks" if variable inside the string and isn't followed by space
KT-35097 False positive "Call replaceable with binary operator" on explicit 'equals' call on a platform type value
KT-35165 "Replace 'if' with elvis operator": don't suggest if val initializer is a complex expression
KT-35346 False positive 'Make internal' suggestion for function inside interface
KT-35357 "Move lambda argument out of parentheses" does not preserve block comments
KT-38349 Invalid suggestion to fold to elvis when having a var-variable
KT-40704 False negative "Redundant semicolon" at start of line
KT-40861 "Convert to secondary constructor" intention expected on class name
KT-40879 False positive "Redundant 'inner' modifier" when calling another inner class with empty constructor
KT-40985 "Remove explicit type arguments" is suggested when type has an annotation
KT-41223 False positive "Redundant inner modifier" inspection ignores constructor arguments of object expressions
KT-41246 False positive "Receiver parameter is never used" with anonymous function expression
KT-41298 "Remove redundant 'with' call" intention works incorrectly with non-local returns and single-expression functions
KT-41311 False positive "Redundant inner modifier" when deriving from a nested Java class
KT-41499 "Convert receiver to parameter" produces code with incorrect order of generic type and function invocation in case of generic function with lambda as a parameter
KT-41680 False positive "Redundant inner modifier" when deriving from class with non-empty constructor and value passed to it from enclosing class
KT-42201 Add Opt-In action doesn't work if there is already OptIn annotation
KT-42255 "Replace elvis expression with 'if' expression" intention shouldn't introduce unnecessary variable if 'error' expression is used

IDE. JS

KT-43760 KJS: Debugging Kotlin code for Node.js runtime doesn't work

IDE. Scratch

KT-43415 Kotlin scratch file could not be run and could lead to dead lock

JavaScript

Fixes

KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner
KT-39964 Throwable incorrectly implements constructor for (null, cause) args in K/JS-IR
KT-40090 KJS: IR. Invalid behaviour for optional parameters (redundant tail undefined parameters)
KT-40686 KJS: Uncaught ReferenceError caused by external class as type inside eventListener in init block
KT-40771 KJS / IR: "ReferenceError: Metadata is not defined" caused by default parameter value in inner class constructor
KT-41032 KJS / IR: "AssertionError: Assertion failed" caused by class that is delegated to inherited interface
KT-41771 KJS / IR: IndexOutOfBoundsException "Index 0 out of bounds for length 0" caused by inline class with List in primary constructor and vararg in secondary
KT-42025 KJS / IR: IrConstructorCallImpl: No such type argument slot: 0
KT-42112 KJS: StackOverflowError on @JsExport in case of name clash with function with Enum parameter with star-projection
KT-42262 KJS: break-statements without label are ignored in a when
KT-42364 KJS: Properties of interface delegate are non-configurable
KT-43222 KJS IR: prototype lazy initialization for top-level properties like in JVM
KT-43313 KJS / IR: "Can't find name for declaration FUN" for secondary constructor

KMM Plugin

KT-41677 Could not launch iOS project with custom display name
KT-42463 Launch common tests on local JVM via run gutter
KT-43188 NoSuchMethodError in New Module Wizard of KMM Project

Libraries

KT-41112 Docs: add more details about bit shift operations
KT-41356 Incorrect documentation for rangeTo function

Middle-end. IR

KT-41765 [Native/IR] Could not resolveFakeOverride()
KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets
KT-42397 Reverse C interop usage of companion object reports spurious leaks

Native. C and ObjC Import

KT-42412 [C-interop] Modality of generated property accessors is always FINAL

Native. ObjC Export

KT-38530 Native: values() method of enum classes is not exposed to Objective-C/Swift

Native. Platform libraries

KT-43597 Support for Xcode 12.2 SDK

Native. Platforms

KT-43276 Support watchos_x64 target

Native. Runtime

KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets

Native. Stdlib

KT-42428 Inconsistent behavior of map.entries on Kotlin.Native

Reflection

KT-34024 "KotlinReflectionInternalError: Inconsistent number of parameters" with javaMethod on suspending functions with inline class in function signature or inside the function

Tools. CLI

KT-43406 JVM: produce deterministic jar files if -d option value is a .jar file

Tools. CLI. Native

KT-40670 Allow to override konan.properties via CLI

Tools. Compiler Plugins

KT-41764 KJS /IR IllegalStateException: "Symbol for public kotlin/arrayOf is unbound" with serialization plugin
KT-42976 kotlinx.serialization + JVM IR: NPE on annotation with @SerialInfo

Tools. Gradle

KT-38692 KaptGenerateStubs Gradle task will not clean up outputs when sources are empty and not an incremental build
KT-40140 kotlin-android plugin eagerly creates several Gradle tasks
KT-41295 Kotlin Gradle Plugin 1.4.20 Configuration Caching bug due to friendPath provider
KT-42058 Support moduleName option in Kotlin Gradle plugin for JVM
KT-43054 Implementation of AbstractKotlinTarget#buildAdhocComponentsFromKotlinVariants breaks configuration caching
KT-43489 Incremental compilation - unable to find history files causing full recompilation

Tools. Gradle. JS

KT-42400 Kotlin/JS: Gradle DSL: customField() is rejected in Groovy build.gradle
KT-42462 NPM dependency declaration with Groovy interpolated string
KT-42954 Kotlin/JS: IDE import after changing kotlin.js.externals.output.format does not re-generate externals
KT-43535 Common webpack configuration breaks on lambda serialization in some cases

Tools. Gradle. Multiplatform

KT-42269 Setup default dependsOn edges for Android source sets
KT-42413 [MPP/gradle] withJava breaks build on 1.4.20-M1
KT-43141 Gradle / Configuration cache: NPE from org.jetbrains.kotlin.gradle.tasks.KotlinCompileCommon.getKotlinOptions() on reusing configuration cache for task compileCommonMainKotlinMetadata
KT-43329 Gradle / Configuration cache: IAE “Parameter specified as non-null is null: method KotlinMetadataTargetConfiguratorKt.isCompatibilityMetadataVariantEnabled, parameter $this$isCompatibilityMetadataVariantEnabled” on reusing configuration cache for task compileKotlinMetadata

Tools. Gradle. Native

KT-39564 Make kotlin-native Gradle tasks Cacheable
KT-42485 Fail on cinterop: clang_indexTranslationUnit returned 1
KT-42550 Adding subspec dependency with git location failed
KT-42849 Gradle / Configuration cache: tasks nativeMetadataJar, runReleaseExecutableNative, runDebugExecutableNative are unsupported and fails on reusing configuration cache
KT-42938 CocoaPods Gradle plugin: podBuildDependencies doesn't properly report xcodebuild failures
KT-43151 Gradle / Configuration cache: UPAE “lateinit property binary has not been initialized” on reusing configuration cache for linkDebugExecutableNative, linkDebugTestNative, linkReleaseExecutableNative tasks
KT-40999 CocoaPods Gradle plugin: Support custom cinterop options when declaring a pod dependency.

Tools. Parcelize

KT-41553 JVM IR, Parcelize: IrStarProjectionImpl cannot be cast to class IrTypeProjection

Tools. kapt

KT-34340 Incremental annotation processor recompile all files (only if KAPT enabled).
KT-36667 Kapt: Add a flag to strip kotlin.Metadata() annotations from stubs
KT-40493 KAPT does not support aggregating annotations processors in incremental mode
KT-40882 Kapt stub generation is non-deterministic for incremental compilation
KT-41788 NullPointerException: Random crashes of build using gradle and kapt because of not calling Processor.init()
KT-42182 KAPT: Does not consider generated sources for incremental compilation.

File	Sha256
kotlin-compiler-1.4.30-M1.zip	fe9f843a0ee6c0196d75ec60014b51bdf372d80ed6d6d1584f20a409ebfebb24
kotlin-native-prebuilt-linux-1.4.30-M1.tar.gz	ab291c4d8284af0c9490d4d122bac1edc5e688309361b4eb26427c35d6888152
kotlin-native-prebuilt-macos-1.4.30-M1.tar.gz	993b1a56e219f28a173ae1a07de0b1f4670ea3ee16722ac4168766053151e068
kotlin-native-prebuilt-windows-1.4.30-M1.zip	fcee3a938ad31d104fba7837f7e4ae3cb9ca2f7a35deb28f71f4c8b44a9ff945

Open source →

File	Sha256
kotlin-compiler-1.4.21.zip	46720991a716e90bfc0cf3f2c81b2bd735c14f4ea6a5064c488e04fd76e6b6c7
kotlin-native-prebuilt-linux-1.4.21.tar.gz	ae54afed3e3f65a2e3170b203679e86c78979c0c53dd0d7d7a38cf4fa8d46ca7
kotlin-native-prebuilt-macos-1.4.21.tar.gz	f3a65ea070cbfca89497a14340f1530d1ec37875efc8be9a972b6a7aefde29c0
kotlin-native-prebuilt-windows-1.4.21.zip	5359f53b01bdc5bd4fd956630e33a0ba36ea0471a8e86fe5405266d899694223

1.4.2019 Nov 2020Deprecated

`KT-42121` Deprecate Kotlin Android Extensions compiler plugin

CHANGELOG

Android

KT-42121 Deprecate Kotlin Android Extensions compiler plugin
KT-42267 Platform declaration clash error in IDE when using kotlinx.android.parcel.Parcelize
KT-42406 Long or infinite code analysis on simple files modification

Backend. Native

KT-27534 Bridges to Nothing-returning methods have incorrect signature
KT-30284 Native: Nothing? type for expression override and crash
KT-36430 Optimize when with in range cases
KT-38787 Missing optimization for "in range" check
KT-39100 Make Native behaviour of property initialization consistent with JVM
KT-39798 Override equals/hashCode in functional interface wrappers on Native
KT-39800 equals/hashCode on adapted function references on Native
KT-41394 Compilation failed: Backend Internal error: Exception during IR lowering
KT-41907 Framework test segfaults on GC on watchos_x86 compiled with -opt

Compiler

New Features

KT-21147 JEP 280: Indify String Concatenation (StringConcatFactory)
KT-34178 Scripts should be able to access imports objects
KT-35549 Support kotlin-android-extensions in JVM IR backend (for use with Jetpack Compose projects)
KT-31567 Support special semantics for underscore-named catch block parameters

Performance Improvements

KT-20571 Coroutines: Reduce number of local variables stored at suspension point
KT-28016 Coroutine state-machines spill/unspill shall be optimized using data-flow analysis
KT-33394 UI freezes triggered by QualifiedExpressionResolver.resolveToPackageOrClassPrefix
KT-36814 Support optimized delegated properties in JVM_IR
KT-36829 Optimize 'in' expressions (operator fun contains) in JVM_IR
KT-41741 NI: "AssertionError: Empty intersection for types" with generic Java collection
KT-42195 NI: prohibitively long compilation time for values of nested data structures with type inference
KT-42221 Native compiler never finishes frontend phase after migrating to Kotlin 1.4.10

Fixes

KT-11713 Refine visibility check for synthetic property with protected setter
KT-16222 Coroutine should be clearing any internal state as soon as possible to avoid memory leaks
KT-25519 Extra inline marks inside suspending function callable reference bytecode
KT-33226 Object INSTANCE field not annotated with NotNull in generated bytecode
KT-35495 FIR: forbid non-Java synthetic properties
KT-35651 Kotlin stdlib has greater resolution priority than jars added via @file:DependsOn annotation
KT-35716 Using @JvmOverloads in @JvmStatic functions in interface companion objects causes a ClassFormatError
KT-35730 FIR: consider creating fake overrides for objects
KT-36951 IllegalStateException: Expected some types: Throwing exception when there is a type parameter upper bound for itself
KT-37321 [FIR] Support java array in type argument
KT-37431 [FIR] Support Builder Inference
KT-38272 FIR2IR: use lazy IR symbols for externals & fake overrides
KT-38333 FIR: CCE on red code with assignment used as expression
KT-38334 FIR: CCE when resolving try-as-expression
KT-38336 FIR: NPE with corrupted numeric constant literal
KT-38397 FIR: Exception while resolving contract definition
KT-38444 [FIR] Invoke extension lambda with safe call
KT-38470 FIR: ConeDefinitelyNotNullType in signature
KT-38471 FIR: ConeIntersectionType in signature
KT-38925 Internal error: wrong bytecode generated. (AssertionError: int type expected, but null was found in basic frames)
KT-38989 FIR: Refine sealed classes exhaustiveness in case of sealed subclass
KT-38992 FIR: Refine type resolution for inner classes
KT-39000 FIR: Support smartcast after reference equality check
KT-39005 FIR: Resolve plusAssign in a dependent context
KT-39008 FIR: Investigate strange effect of type alias and not-nullable bound on inference
KT-39012 FIR: Inference doesn't get through elvis to lambda parameter
KT-39028 FIR: Strange resolution to synthetic property with implicit extension receiver while there's an explicit receiver
KT-39032 FIR: Ambiguity in member scope of a type parameter with multiple bounds
KT-39033 FIR: Ambiguity when calling generic overridden property
KT-39034 FIR: Support nested extension function types
KT-39040 FIR: Deserialize annotations from compiled Kotlin binaries
KT-39043 FIR: Bare types incorrectly work with type aliases
KT-39044 FIR: Add fillInStackTrace to member scope of kotlin.Throwable
KT-39046 FIR: Implicit types in lambdas left when call argument is a type cast
KT-39048 FIR: Inference fails with integer literal used as Comparable
KT-39050 FIR: Type resolver doesn't see nested classes from super class of a local class
KT-39070 FIR: Ambiguity on super calls to hashCode/equals when having super interface and class
KT-39072 FIR: Subtyping check doesn't affect nullability of safe-call receiver
KT-39076 FIR: Synthetic property is not a var because of @Nullable annotation on parameter
KT-39080 FIR: Smart casts remain incorrect if lambda is present in when branch
KT-39374 Wrong bytecode generated for suspend function call with EXACTLY_ONCE lambda capturing a variable initialized in when-subject
KT-39621 [FIR] Support when exhaustiveness checker for java enums
KT-40135 JVM IR does not generate restricted suspend lambdas
KT-40382 Missing proper jvmSignature for synthesized equals/hashCode/toString in inline classes
KT-40605 JVM IR: IndexOutOfBoundsException caused by inner class passed to generic outer class method with Nothing type argument
KT-40664 JVM: No bounds check in optimization of ULong in UInt..UInt
KT-40665 JVM: No resolved function check when optimizing in/contains with mismatched bound types
KT-41014 FIR2IR: when/where/how to determine the presence of a backing field for a property
KT-41018 FIR2IR: sort members during de/serialization
KT-41144 False positive "Redundant spread operator" in when statement and generic vararg argument
KT-41218 HMPP: arrayList declarations are visible both from stdlib-common and stdlib-jvm and lead to false-positive resolution ambiguity in IDE
KT-41374 JVM / IR: NoSuchMethodError in Android project compiler caused by combination of inline classes and coroutines
KT-41388 NI: Backend Internal error: Exception during IR lowering
KT-41429 Inline class returned from suspend function should be boxed on resume path
KT-41465 JVM / IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL CLASS name" caused by inline method call into multiple constructors
KT-41484 JVM IR: support -Xemit-jvm-type-annotations
KT-41668 JVM IR: incorrect enclosing constructor for lambdas in initializers of inner classes
KT-41669 JVM IR: incorrect hashCode intrinsic is used in JVM target 1.8 for generic type substituted with primitive
KT-41693 NI: Type inference in nested expression incorrectly assumes non-nullable return type of Java function, causing NullPointerException
KT-41729 NI: UnsupportedOperationException with invalid callable reference
KT-41761 JVM IR: CCE from backend on generating typeOf for non-reified type parameter with star projection in upper bound
KT-41789 Missing DebugMetadata in inlined suspend lambda
KT-41913 NI: Kotlin 1.4 type inference breaks valid code
KT-41934 NI: a type variable for lambda parameter has been inferred to nullable type instead of not null one
KT-42005 JVM / IR: "NullPointerException: Parameter specified as non-null is null" when toString is called on inline class with not primitive property
KT-42450 NI: "IllegalStateException: Error type encountered: NonFixed:" with coroutines
KT-42523 Missed DefaultImpls for interface in -jvm-default=all mode on inheriting it from interface compiled in old scheme
KT-42524 Wrong specialization diagnostic is reported on inheriting from java interface with default with -Xjvm-default=all-compatibility
KT-42546 HMPP: incorrect subtyping of nullable types & overload resolution ambiguity on using and expect-function declaration with nullable expect in a signature
KT-17691 Wrong argument order in resolved call with varargs
KT-25114 Prohibit @JvmStatic on functions in private companions
KT-33917 Prohibit to expose anonymous types from private inline functions
KT-35870 Forbid secondary enum class constructors which do not delegate to the primary constructor
KT-39098 NI: parameter of anonymous function can be inferred to Any? if another parameter's type is specified
KT-41176 NI with Gson: "ClassCastException: java.util.ArrayList cannot be cast to java.lang.Void"
KT-41194 ClassCastException on returning Result.failure from lambda within suspend function
KT-42438 NI: ClassCastException: cannot be cast to java.lang.Void caused by when statement in run function
KT-42699 False positive NON_JVM_DEFAULT_OVERRIDES_JAVA_DEFAULT diagnostic in new jvm-default modes
KT-42706 Kotlin 1.4 infers generic is Nothing instead of actual Foo class (Android project)

Docs & Examples

KT-42318 No documentation for kotlin.js.js

IDE

New Features

KT-20775 More kotlin kinds in new kotlin file/class menu
KT-31331 Improve: Optimize Import should remove unused unresolved imports
KT-31500 Smart enter: support get() clause
KT-39231 Injection: Add receiver of kotlin.text.toPattern to standard Kotlin injections
KT-39844 Add specific highlight for Enum class

Performance Improvements

KT-39353 Implement EnterBetweenBracesNoCommitDelegate
KT-39720 A lot of freezes in Kotlin project
KT-41634 Deadlock in org.jetbrains.kotlin.idea.framework.LibraryEffectiveKindProviderImpl.getEffectiveKind
KT-41936 Impossible to work with Kotlin 1.4 in 202 idea, idea eats all cpu

Fixes

KT-10790 "Move statement up" for @file-targeted annotation moves package declaration to bottom of file
KT-15262 "Generate toString()" is ignoring property if it has a getter
KT-24352 Method separators: displayed between properties, not displayed between companion object and function
KT-29364 "Extend selection" can't select lambda body with parameters
KT-32403 Clickable links in annotation parameters (like in TODOs)
KT-32409 Organizing imports should not remove imports while there are unresolved symbols
KT-34566 Too small indent after line break for multi line strings
KT-34587 "Move statement down" doesn't work for statement in constructor with end-of-line comment
KT-34705 "Move statement down" for penultimate statement with end-of-line comment in constructor leads to moving comma to the end of comment
KT-34707 "Move statement up" for last statement with end-of-line comment in constructor leads to moving comma to the end of comment
KT-35424 FIR IDE: Kotlin project does not see stdlib
KT-35732 URLs in String literals are not clickable
KT-35859 Language injection doesn't work with named arguments in different position
KT-37210 UAST: KtLightClassForSourceDeclaration.isInheritor sometimes returns the wrong result
KT-37219 File level OptIn annotation is not recognized by the IDE
KT-38959 IDE: False negative EXPLICIT_DELEGATION_CALL_REQUIRED, "IllegalArgumentException: Range must be inside element being annotated"
KT-39398 Wrong import of unrelated object member is suggested for receiver
KT-39457 Separate decompiled declarations Light implementation from LightClasses infrastructure
KT-39899 KotlinOptimizeImportsRefactoringHelper: ISE: Attempt to modify PSI for non-committed Document
KT-40578 UAST: write accesses to Kotlin properties should resolve to setter
KT-41290 KotlinClassViaConstructorUSimpleReferenceExpression resolves to PsiMethod instead of PsiClass
KT-42029 HMPP, IDE: NPE from FacetSerializationKt.getFacetPlatformByConfigurationElement on project opening
KT-43202 On 1.4.20-RC version AS ask for xml compatibility update for EAP version of plugin
KT-42883 No highlighting for elements marked as @Deprecated in stdlib

IDE. Android

KT-42406 Long or infinite code analysis on simple files modification
KT-42061 Highlighting is broken in Android activity
KT-41930 Android Studio 4.2 cannot start after updating to 1.4.20 plugin with error: Missing essential plugin: org.jetbrains.android

IDE. Completion

KT-26235 Kotlin methods/fields don't have icons in Java completion

IDE. Debugger

KT-37486 Kotlin plugin keeps reference to stream debugger support classes after stream debugger plugin is disabled
KT-38659 Evaluate Expression: toString() on variable returns error when breakpoint is in commonTest sourceset
KT-39309 Debugger: Prolonged "Collecting data" for variables when breakpoint is inside respondHtml
KT-39435 "Collecting data..." in debugger variables view never finishes
KT-39717 Debugger shows "Collecting data..." forever for instances of some class
KT-40386 Memory leak detected: 'org.jetbrains.kotlin.idea.debugger.coroutine.view.XCoroutineView'
KT-40635 Coroutines Debugger: make IDE plugin accept coroutines 1.3.8-rc* versions as well
KT-41505 Coroutines Debugger: “Access is allowed from event dispatch thread with IW lock only.”

IDE. Decompiler, Indexing, Stubs

KT-28732 Stub file element types should be registered early enough
KT-41346 IDE: "AssertionError: Stub type mismatch: USER_TYPE!=REFERENCE_EXPRESSION" with CollapsedDumpParser class from IDEA SDK
KT-41859 File analysis never ending with kotlinx.cli (AssertionError: Stub type mismatch: TYPEALIAS!=CLASS)
KT-41640 "Project roots have changed" happened during indexing because of org.jetbrains.kotlin.idea.core.script.ucache.ScriptClassRootsUpdater$notifyRootsChanged increases overall indexing time.
KT-41646 "AssertionError: ContentElementType: FILE"; Code analysis never finishes on some files from my project

IDE. Gradle Integration

KT-34271 Support pureKotlinSourceFolders for MPP projects
KT-37106 Gradle + IDE integration: on creating source roots from Project tree IDEA creates incorrect settings
KT-38830 addTransitiveDependenciesOnImplementedModules performance is slowing down Android Studio Gradle Sync
KT-41703 Kotlin plugin not functional: PluginException: While loading class org.jetbrains.kotlin.idea.core.script.KotlinScriptDependenciesClassFinder

IDE. Gradle. Script

KT-35092 “Unable to get Gradle home directory” popup and no build.gradle.kts highlighting right after creating a new project
KT-37590 Wrong notification for precompiled build script
KT-39523 Go to Declaration navigates to decompiled classfile instead of sources in case of jumping to Gradle plugin sources in buildSrc
KT-39542 EA-218043: java.util.NoSuchElementException: No element of given type found (GradleBuildRootsManager)
KT-39790 List of standalone script should be saved between IDE restarts
KT-39910 build.gradle.kts isn't highlighted after import
KT-39916 init.gradle.kts isn't highlighted
KT-40243 gradle.kts: standalone script under build root isn't highlighted as standalone
KT-41141 Gradle Kotlin DSL: "cannot access 'java.lang.Comparable'. Check your module classpath" with empty JDK in Project structure
KT-41281 Multiple Script Definitions warning shown in git project having multiple Gradle projects

IDE. Hints

KT-32368 Rework Inline hints settings so that they look appropriate with the new UI in 2019.3
KT-38027 Support Code Vision feature in Kotlin
KT-42014 ClassNotFoundException in Android Studio 4.2 after installing 1.4.20 plugin

IDE. Hints. Parameter Info

KT-24172 Parameter info marks signature as inapplicable when using argument labels
KT-41617 Parameter Info shows nothing inside already present type arguments of supertype
KT-41645 Add support for mixed named arguments to parameter info popup

IDE. Inspections and Intentions

New Features

KT-14578 Suggest "Convert lambda to reference" intention for generic extension function
KT-19321 Warn if method with nullable return type always returns non-null
KT-20718 Add a quick fix for "this class has no constructor" error on 'expect' annotation classes
KT-21223 Add inspection for incomplete destructuring
KT-22420 Intention to replace a = b with b.also { a = it }
KT-39930 Add inspection for nullable Boolean in if condition
KT-40016 Replace 'a.toLowerCase() == b.toLowerCase()' with 'a.equals(b, ignoreCase = true)' inspection
KT-40283 Inspection which replaces also/apply with nested forEach to onEach
KT-40769 Add intention to replace isBlank/isNotBlank method negation

Fixes

KT-12222 Intention 'Convert to block body' should take nullability of overriden method into account when expression is of platform type
KT-14395 Lambda to Reference doesn't work for generic types
KT-15846 'Change lambda expression return type' quick fix does nothing
KT-15944 IDEA doesn't suggest to replace deprecated get set operator functions when it used as operator
KT-17222 "Convert reference to lambda" creates red code for method with default argument values
KT-18125 "Wrap with let {...}" intention not available in all cases
KT-20438 Naming convention inspections: factory functions that are named like classes are flagged
KT-24138 Incorrect behavior in "convert reference to lambda" with new inference enabled, on function reference with default arguments
KT-29844 "Create class from usage" should mark constructor of created class as internal if its parameters have internal visibility
KT-30928 "Show hints for suspend calls" is too easy to enable and hard to disable
KT-31749 "Surround with null check" produces incorrect check for 'in' expression
KT-32963 Don't suggest java directory of a JVM source set in multiplatform project as a target for Create actual quick fix
KT-33211 Quickfix "add parameter" for method references should infer functional type instead of KFunction
KT-33258 "Merge 'if's" intention drops comment before nested if
KT-34572 Convert to block body action improperly works with suppress annotations
KT-35128 Intention Convert member to extension hides property delegate text with single line comment
KT-35214 Intention Put parameters on one line: don't suggest if parameters has end-of-line comments
KT-35320 False positive "Replace explicit parameter 'x' with 'it'" in 'when' expression which returns lambda
KT-35525 False positive intention for 'run': "Convert to 'let'" when invoked without receiver
KT-35526 Intention "Eliminate argument of 'when'" is broken for 'when' expression without 'else' branch
KT-35805 FoldInitializerAndIfToElvis: should not add new line for multiline initializer
KT-36051 IfThenToSafeAccessInspection: do not report if condition is SENSELESS_COMPARISON
KT-37748 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter
KT-37841 IllegalStateException after "add non-null asserted call" on nullable function reference
KT-38139 False negative "Add suspend modifier" quickfix when suspend function is called in inline lambda
KT-38267 False positive "Call on collection type may be reduced" with Java platform types: suggested to reduce 'mapNotNull' call to 'map'
KT-38282 False positive "Remove redundant spread operator" inspection with array as class property or fun argument
KT-38915 "Remove explicit type specification" intention should be disabled in explicit API mode
KT-38981 "Specify return type explicitly" inspection is not reported for declaration annotated with @PublishedApi in Explicit Api mode
KT-39026 'Specify return type explicitly' intention duplicates compiler warning in Explicit api mode
KT-39200 False positive "Redundant qualifier name" with same-named member object and companion property
KT-39263 False positive "Variable should be inlined" for override value in initialized object
KT-39311 Batch quick fix name for "Change file's package" is truncated
KT-39393 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter for outer function
KT-39454 False positive "Unused symbol" with private anonymous object property
KT-39467 False negative "Move variable declaration into when" if a variable declaration is placed on a new line
KT-39490 'Wrap with ?.let' quickfix put the receiver in let lambda
KT-39552 Merge 'if's intention drops comment after nested if
KT-39604 "Package directive doesn't match file location" quick fix does not insert a space between keyword package and the package name
KT-39772 "Redundant 'Unit'" should support lambdas
KT-40215 "Create abstract function" quick fix suggested even though surrounding class is non-abstract
KT-40448 "Convert call chain into sequence": support functions added in Kotlin 1.4
KT-40558 False positive "Move to class body" intention on data class constructor property
KT-41338 False positive "Redundant 'asSequence' call" when Map.Entry properties are used.
KT-41615 "Unused equals expression" inspection: highlight whole expression with yellow background
KT-43037 Disable "Incomplete destructuring declaration" in 1.4.20

IDE. J2K

KT-20421 J2K: SUPERTYPE_NOT_INITIALIZED for object extending base class
KT-37298 J2K: implicit widening conversion for whole argument expression is transformed to cast on subexpression
KT-38879 J2K loses class annotations when converting class to object
KT-39149 J2K fails with augmented assignment operators when multiplying int by a non-int
KT-40359 J2K: Conversion of invalid octal numbers throws NumberFormatException
KT-40363 J2K: Converting HEX integer literal in for-loop throws NumberFormatException

IDE. JS

KT-39319 KJS: Support debugging through new Intellij 202 API
KT-41328 KJS / Gradle: explicitApi mode doesn't work

IDE. KDoc

KT-17926 IDE should show documentation for a class if the constructor has no docs.
KT-19069 KDoc: show default argument values
KT-37132 Redundant @NotNull annotation in a Quick Documentation pop-up

IDE. Misc

KT-39327 Get rid of usages of internal classes ModuleOrderEntryImpl and LibraryImpl
KT-40455 Improve support for EditorConfig

IDE. Navigation

KT-24616 Find usages fails to find setter usage
KT-38762 "Cannot access 'java.io.Serializable' which is a supertype of 'kotlin.Int'" brokes navigation to constructor parameter declaration
KT-39558 Call Hierarchy shows references from KDoc
KT-40788 "Find usages" on Java getter overridden in Kotlin doesn't find synthetic property usage when it is called without base declaration
KT-40960 Unable to find usages in java of Kotlin constructor in library when sources is attached.

IDE. Project View

KT-37528 'Add Kotlin File/Class' suggests file before class

IDE. Refactorings

KT-19744 "Change Signature" is not available on constructor keyword in primary constructor
KT-22170 "Change Signature" ignores Java usages of methods marked with @JvmStatic
KT-37517 Invalid qualified name on copy-paste in build.gradle.kts

IDE. Run Configurations

KT-24463 MPP, Intellij runner: Run does not add resource directory to classpath
KT-36370 Hide run gutter icons for not yet implemented targets in multiplatform projects
KT-39788 MPP, Gradle runner: Run does not add resource directory to classpath on project reopen without Gradle sync

IDE. Scratch

KT-40557 IDE / Scratch: .kt files are treated as Kotlin scratches, opening fails

IDE. Script

KT-35825 Custom kotlin scripts have no project import suggestions in sub modules.
KT-39796 Performance of KotlinScriptDependenciesClassFinder
KT-41622 IDE: Kotlin scripting support can't find context class from same project
KT-41905 IDE / Script: FilePathPattern parameter in @KotlinScript annotation is not reflected correctly in Pattern / Extension
KT-42206 Cannot load script definitions using org.jetbrains.kotlin.jsr223.ScriptDefinitionForExtensionAndIdeConsoleRootsSource

IDE. Tests Support

KT-28854 Run/Debug configurations: "Redirect input from" option is not available for Kotlin apps
KT-36909 IDE attempts to run non-JVM tests launched from context menu as JVM ones
KT-37799 Don't show a target choice in context menu for a test launched on specific platform

IDE. Wizards

KT-37965 New Project wizard 1.4+: adding JUnit5 test library add dependency to runner
KT-40527 Node.JS application template in New Project Wizard
KT-40874 Open new project wizard help page in browser when clicking help button in new project wizard
KT-41417 Add react template to new project wizard
KT-41418 Wizard: Support KJS compiler choice
KT-41958 New project wizard: Backend/Console applications template with Groovy DSL missing compileTestKotlin block
KT-42372 Rrename test classes in wizard template to avoid name clashing

JavaScript

KT-38136 JS IR BE: add an ability to generate separate js files for each module and maybe each library
KT-38868 [MPP / JS / IR] IllegalStateException: "Serializable class must have single primary constructor" for expect class without primary constructor with @Serializable annotation
KT-39088 [ KJS / IR ] IllegalStateException: Concrete fake override IrBasedFunctionHandle
KT-39367 KJS: .d.ts generation not working for objects
KT-39378 KJS / IR: "IllegalStateException: Operation is unsupported" with binaries.executable() and external function inside for loop with Iterator as return type
KT-41275 KJS / IR: "IllegalStateException: Can't find name for declaration FUN" caused by default value in constructor parameter
KT-41627 KJS / IR / Serialization: IllegalStateException: Serializable class must have single primary constructor
KT-37829 Kotlin JS IR: "Properties without fields are not supported" for companion objects
KT-39740 KJS / IR: Can't use Serializable and JsExport annotations at the same time

KMM Plugin

KT-41522 KMM: exceptions for Mobile Multiplatform plugin are suggested to report to Google, not JetBrains
KT-42065 [KMM plugin] iOS apps fail to launch on iOS simulator with Xcode 12

Libraries

KT-41799 String.replace performance improvements
KT-43306 Deprecate createTempFile and createTempDir functions in kotlin.io
KT-19192 Provide file system extensions/APIs based on java.nio.file.Path
KT-41837 Remove @ExperimentalStdlibApi from CancellationException

Middle-end. IR

KT-40193 IR: pluginContext.referenceClass() is not resolving typealias
KT-41181 Kotlin/Native 1.4.0 compiler fails on data class with >120 fields

Native. C and ObjC Import

KT-41250 [C-interop] Stubs for C functions without parameter names should have non-stable names
KT-41639 Use LazyIR for enums and structs from cached libraries
KT-41655 Native: "type cnames.structs.S of return value is not supported here: doesn't correspond to any C type" when accessing forward-declared-struct-typed C global variable

Native. ObjC Export

KT-38641 Kotlin-Multiplatform: Objective-C description method name collision in Swift
KT-39206 New line characters in @Deprecated annotation cause syntax error in Kotlin/native exported header

Native. Platform libraries

KT-42191 Support for Xcode 12

Native. Runtime. Memory

KT-42275 "Memory.cpp:1605: runtime assert: Recursive GC is disallowed" sometimes when using Kotlin from Swift deinit

Native. Stdlib

KT-39145 MutableData append method

Tools. Android Extensions

KT-42342 Build fails with java.lang.RuntimeException: Duplicate class found in modules on checkDebug(Release)DuplicateClasses task when both kotlin-parcelize and kotlin-android-extensions plugins are applied

Tools. CLI

KT-35111 Extend CLI compilers help with link to online docs
KT-41916 Add JVM target bytecode version 15

Tools. Commonizer

KT-41220 [Commonizer] Short-circuit type aliases
KT-41247 [Commonizer] Missed supertypes in commonized class
KT-41643 Commonizer exception for targets [ios_x64], [macos_x64]
KT-42574 HMPP: unresolved platform.* imports in nativeMain source set

Tools. Compiler Plugins

KT-36329 Provide diagnostic in kotlinx.serialization when custom serializer mismatches property type
KT-40030 Move the Parcelize functionality out of the Android Extensions plugin

Tools. Gradle

KT-33908 Make Kotlin Gradle plugin compatible with the Gradle configuration cache
KT-35341 KotlinCompile: Symlinked friend paths are no longer supported

Tools. Gradle. JS

New Features

KT-35330 Allow to customise generated package.json
KT-39825 Provide single point of Webpack configuration in Gradle script
KT-41054 Support Yarn resolutions
KT-41340 Add flag to suppress kotlin2js deprecation message
KT-41566 Kotlin/JS: Support JavaScript Library distribution
KT-42222 KJS / Gradle: "Cannot find package@version in yarn.lock" when npm dependencies of one package but with different version are used in project
KT-42339 Support dukat binaries generation

Fixes

KT-39515 package.json is regenerated without a visible reason
KT-39838 Kotlin/JS Gradle tooling: NPM dependencies of different kinds with different versions of the same package fail with "Cannot find package@version in yarn.lock"
KT-39995 Collect statistic about generateExternals feature
KT-40087 Kotlin/JS, IR backend: browserRun: update in continuous mode fails: "ENOENT: no such file or directory" referring output .js
KT-40159 Implement workaround / fix for webpack's "window is not defined"
KT-40178 Browser run task prints output in TeamCity format
KT-40201 Kotlin/JS: Gradle: public package.json has empty devDependencies {}
KT-40202 Kotlin/JS: Gradle: NPM version range operators are written into package.json as escape sequences
KT-40342 [Gradle, JS, Maven] "Cannot find module" generating fake NPM module from Maven dependendency
KT-40462 Collect statistic about usages of kotlin.js.generate.executable.default option
KT-40753 Type script definition file is not referenced as types in the package.json
KT-40812 Node.JS run working directory
KT-40865 KJS / Gradle: Registering a task with a type that directly extends AbstractTask has been deprecated
KT-40986 KJS / Gradle: BuildOperationQueueFailure when two different versions of js library are used as dependencies
KT-41125 Bump NPM versions in 1.4.20
KT-41286 KJS / Gradle: args order in runTask is changed in 1.4.0
KT-41475 KJS / Gradle: debug mode doesn't support custom launchers in karma config
KT-41662 Kotlin/JS: with CSS support mode == "extract" browser test fails even without CSS usage: "Error in config file!"
KT-42494 KJS / Gradle: "Configuration cache state could not be cached" caused by Gradle configuration cache

Tools. Gradle. Native

KT-39764 Assertions are disabled when running K/N compiler in Gradle process
KT-39999 Cocoapods plugin's dummy header cannot be compiled
KT-40999 CocoaPods Gradle plugin: Support custom cinterop options when declaring a pod dependency.
KT-41367 CocoaPods Gradle plugin: support git repository dependency
KT-41844 Kotlin 1.4.10 gradle configuration error with cocoapods using multiple multiplatform modules
KT-42531 Gradle task "podGenIos" fails if a Pod with a static library is added.

Tools. Incremental Compile

KT-37446 Incremental analysis for Java sources fails when run on JDK 11

Tools. Parcelize

KT-39981 Android parcel 'java.lang.VerifyError: Bad return type'
KT-42267 Platform declaration clash error in IDE when using kotlinx.android.parcel.Parcelize
KT-42958 False positive IDE error on classes with kotlinx.parcelize.Parcelize on project initial import
KT-43290 Typo in error message for ErrorsParcelize.DEPRECATED_ANNOTATION - kotlin.parcelize instead of kotlinx.parcelize
KT-43291 Diagnostic deprecation messages should not be shown in case kotlin-android-extensions plugin is applied

Tools. Scripts

KT-37987 Kotlin script: hyphen arguments not forwarded to script
KT-38404 Scripting API: Provide Location of Annotation Usage
KT-39502 Scripting: reverse order of Severity enum so that ERROR > INFO
KT-42335 No "caused by" info about an exception that thrown in Kotlin Script

Tools. kapt

KT-25960 Interfaces annotated with JvmDefault has wrong modifiers during annotation processing
KT-37732 Kapt task is broken after update to 1.3.70/1.3.71
KT-42915 Kapt generates invalid stubs for static methods in interfaces in Kotlin 1.4.20-M2

Checksums

File	Sha256
kotlin-compiler-1.4.20.zip	11db93a4d6789e3406c7f60b9f267eba26d6483dcd771eff9f85bb7e9837011f
kotlin-native-prebuilt-linux-1.4.20.tar.gz	b65cc8b1510b21f23587c5457a74dc9e7cd4a6294fa38c00d688837f8d52d554
kotlin-native-prebuilt-macos-1.4.20.tar.gz	9040ab932f01696b91608a6fd46f78b2f5f399d3a1132a344af6d83c7570f1a9
kotlin-native-prebuilt-windows-1.4.20.zip	80c26b36b358a1a2fdba184a354a758b00b6f27e719dc2086cf5d287f92f12a3

Open source →

1.4.20-M130 Oct 2020pre-releaseDeprecated

`KT-15944` IDEA doesn't suggest to replace deprecated get set operator functions when it used as operator

Info about particular features

New project templates in Kotlin/JS:

KT-41417 - Add react template to new project wizard
KT-40527 - Node.JS application template in New Project Wizard
KT-35549 - Support kotlin-android-extensions in JVM IR backend (for use with Jetpack Compose projects)

Kotlin/JS Gradle plugin upgrades:

KT-41054 - resolutions rule for yarn
KT-35330 -customise generated package.json

Performance boosts:

Changelog

Backend. Native

KT-27534 Bridges to Nothing-returning methods have incorrect signature
KT-30284 Native: Nothing? type for expression override and crash
KT-36430 Optimize when with in range cases
KT-38787 Missing optimization for "in range" check
KT-39100 Make Native behaviour of property initialization consistent with JVM
KT-39798 Override equals/hashCode in functional interface wrappers on Native
KT-39800 equals/hashCode on adapted function references on Native
KT-41394 Compilation failed: Backend Internal error: Exception during IR lowering
KT-41907 Framework test segfaults on GC on watchos_x86 compiled with -opt

Compiler

New Features

KT-35549 Support kotlin-android-extensions in JVM IR backend (for use with Jetpack Compose projects)

Performance Improvements

KT-20571 Coroutines: Reduce number of local variables stored at suspension point
KT-28016 Coroutine state-machines spill/unspill shall be optimized using data-flow analysis
KT-33394 UI freezes triggered by QualifiedExpressionResolver.resolveToPackageOrClassPrefix
KT-36814 Support optimized delegated properties in JVM_IR
KT-36829 Optimize 'in' expressions (operator fun contains) in JVM_IR

Fixes

KT-16222 Coroutine should be clearing any internal state as soon as possible to avoid memory leaks
KT-25519 Extra inline marks inside suspending function callable reference bytecode
KT-33226 Object INSTANCE field not annotated with NotNull in generated bytecode
KT-35495 FIR: forbid non-Java synthetic properties
KT-35651 Kotlin stdlib has greater resolution priority than jars added via @file:DependsOn annotation
KT-35730 FIR: consider creating fake overrides for objects
KT-36951 IllegalStateException: Expected some types: Throwing exception when there is a type parameter upper bound for itself
KT-37321 [FIR] Support java array in type argument
KT-37431 [FIR] Support Builder Inference
KT-38272 FIR2IR: use lazy IR symbols for externals & fake overrides
KT-38333 FIR: CCE on red code with assignment used as expression
KT-38334 FIR: CCE when resolving try-as-expression
KT-38336 FIR: NPE with corrupted numeric constant literal
KT-38397 FIR: Exception while resolving contract definition
KT-38444 [FIR] Invoke extension lambda with safe call
KT-38470 FIR: ConeDefinitelyNotNullType in signature
KT-38471 FIR: ConeIntersectionType in signature
KT-38925 Internal error: wrong bytecode generated. (AssertionError: int type expected, but null was found in basic frames)
KT-38989 FIR: Refine sealed classes exhaustiveness in case of sealed subclass
KT-38992 FIR: Refine type resolution for inner classes
KT-39000 FIR: Support smartcast after reference equality check
KT-39005 FIR: Resolve plusAssign in a dependent context
KT-39008 FIR: Investigate strange effect of type alias and not-nullable bound on inference
KT-39012 FIR: Inference doesn't get through elvis to lambda parameter
KT-39028 FIR: Strange resolution to synthetic property with implicit extension receiver while there's an explicit receiver
KT-39032 FIR: Ambiguity in member scope of a type parameter with multiple bounds
KT-39033 FIR: Ambiguity when calling generic overridden property
KT-39034 FIR: Support nested extension function types
KT-39040 FIR: Deserialize annotations from compiled Kotlin binaries
KT-39043 FIR: Bare types incorrectly work with type aliases
KT-39044 FIR: Add fillInStackTrace to member scope of kotlin.Throwable
KT-39046 FIR: Implicit types in lambdas left when call argument is a type cast
KT-39048 FIR: Inference fails with integer literal used as Comparable
KT-39050 FIR: Type resolver doesn't see nested classes from super class of a local class
KT-39070 FIR: Ambiguity on super calls to hashCode/equals when having super interface and class
KT-39072 FIR: Subtyping check doesn't affect nullability of safe-call receiver
KT-39076 FIR: Synthetic property is not a var because of @Nullable annotation on parameter
KT-39080 FIR: Smart casts remain incorrect if lambda is present in when branch
KT-39374 Wrong bytecode generated for suspend function call with EXACTLY_ONCE lambda capturing a variable initialized in when-subject
KT-39621 [FIR] Support when exhaustiveness checker for java enums
KT-40135 JVM IR does not generate restricted suspend lambdas
KT-40382 Missing proper jvmSignature for synthesized equals/hashCode/toString in inline classes
KT-40605 JVM IR: IndexOutOfBoundsException caused by inner class passed to generic outer class method with Nothing type argument
KT-40664 JVM: No bounds check in optimization of ULong in UInt..UInt
KT-40665 JVM: No resolved function check when optimizing in/contains with mismatched bound types
KT-41014 FIR2IR: when/where/how to determine the presence of a backing field for a property
KT-41018 FIR2IR: sort members during de/serialization
KT-41144 False positive "Redundant spread operator" in when statement and generic vararg argument
KT-41374 JVM / IR: NoSuchMethodError in Android project compiler caused by combination of inline classes and coroutines
KT-41388 NI: Backend Internal error: Exception during IR lowering
KT-41429 Inline class returned from suspend function should be boxed on resume path
KT-41465 JVM / IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL CLASS name" caused by inline method call into multiple constructors
KT-41668 JVM IR: incorrect enclosing constructor for lambdas in initializers of inner classes
KT-41669 JVM IR: incorrect hashCode intrinsic is used in JVM target 1.8 for generic type substituted with primitive
KT-41693 NI: Type inference in nested expression incorrectly assumes non-nullable return type of Java function, causing NullPointerException
KT-41729 NI: UnsupportedOperationException with invalid callable reference
KT-41761 JVM IR: CCE from backend on generating typeOf for non-reified type parameter with star projection in upper bound
KT-41789 Missing DebugMetadata in inlined suspend lambda
KT-41913 NI: Kotlin 1.4 type inference breaks valid code
KT-41934 NI: a type variable for lambda parameter has been inferred to nullable type instead of not null one

IDE

New Features

KT-20775 More kotlin kinds in new kotlin file/class menu
KT-31331 Improve: Optimize Import should remove unused unresolved imports
KT-31500 Smart enter: support get() clause
KT-39231 Injection: Add receiver of kotlin.text.toPattern to standard Kotlin injections
KT-39844 Add specific highlight for Enum class

Performance Improvements

KT-39353 Implement EnterBetweenBracesNoCommitDelegate
KT-39720 A lot of freezes in Kotlin project
KT-41634 Deadlock in org.jetbrains.kotlin.idea.framework.LibraryEffectiveKindProviderImpl.getEffectiveKind
KT-41936 Impossible to work with Kotlin 1.4 in 202 idea, idea eats all cpu

Fixes

KT-10790 "Move statement up" for @file-targeted annotation moves package declaration to bottom of file
KT-15262 "Generate toString()" is ignoring property if it has a getter
KT-24352 Method separators: displayed between properties, not displayed between companion object and function
KT-29364 "Extend selection" can't select lambda body with parameters
KT-32403 Clickable links in annotation parameters (like in TODOs)
KT-32409 Organizing imports should not remove imports while there are unresolved symbols
KT-33131 No indent before get/set method while editing extension var declaration
KT-34566 Too small indent after line break for multi line strings
KT-34587 "Move statement down" doesn't work for statement in constructor with end-of-line comment
KT-34705 "Move statement down" for penultimate statement with end-of-line comment in constructor leads to moving comma to the end of comment
KT-34707 "Move statement up" for last statement with end-of-line comment in constructor leads to moving comma to the end of comment
KT-35424 FIR IDE: Kotlin project does not see stdlib
KT-35732 URLs in String literals are not clickable
KT-35859 Language injection doesn't work with named arguments in different position
KT-37210 UAST: KtLightClassForSourceDeclaration.isInheritor sometimes returns the wrong result
KT-37219 File level OptIn annotation is not recognized by the IDE
KT-39398 Wrong import of unrelated object member is suggested for receiver
KT-39457 Separate decompiled declarations Light implementation from LightClasses infrastructure
KT-39899 KotlinOptimizeImportsRefactoringHelper: ISE: Attempt to modify PSI for non-committed Document
KT-40578 UAST: write accesses to Kotlin properties should resolve to setter
KT-41290 KotlinClassViaConstructorUSimpleReferenceExpression resolves to PsiMethod instead of PsiClass
KT-42029 HMPP, IDE: NPE from FacetSerializationKt.getFacetPlatformByConfigurationElement on project opening

IDE. Completion

KT-26235 Kotlin methods/fields don't have icons in Java completion

IDE. Debugger

KT-39309 Debugger: Prolonged "Collecting data" for variables when breakpoint is inside respondHtml
KT-39435 "Collecting data..." in debugger variables view never finishes
KT-39717 Debugger shows "Collecting data..." forever for instances of some class
KT-40386 Memory leak detected: 'org.jetbrains.kotlin.idea.debugger.coroutine.view.XCoroutineView'
KT-41505 Coroutines Debugger: “Access is allowed from event dispatch thread with IW lock only.”

IDE. Gradle Integration

KT-34271 Support pureKotlinSourceFolders for MPP projects
KT-37106 Gradle + IDE integration: on creating source roots from Project tree IDEA creates incorrect settings

IDE. Gradle. Script

KT-35092 “Unable to get Gradle home directory” popup and no build.gradle.kts highlighting right after creating a new project
KT-37590 Wrong notification for precompiled build script
KT-39523 Go to Declaration navigates to decompiled classfile instead of sources in case of jumping to Gradle plugin sources in buildSrc
KT-39790 List of standalone script should be saved between IDE restarts
KT-39910 build.gradle.kts isn't highlighted after import
KT-39916 init.gradle.kts isn't highlighted
KT-40243 gradle.kts: standalone script under build root isn't highlighted as standalone
KT-41281 Multiple Script Definitions warning shown in git project having multiple Gradle projects

IDE. Hints

KT-32368 Rework Inline hints settings so that they look appropriate with the new UI in 2019.3
KT-38027 Support Code Vision feature in Kotlin

IDE. Hints. Parameter Info

KT-24172 Parameter info marks signature as inapplicable when using argument labels
KT-41617 Parameter Info shows nothing inside already present type arguments of supertype
KT-41645 Add support for mixed named arguments to parameter info popup

IDE. Inspections and Intentions

New Features

KT-14578 Suggest "Convert lambda to reference" intention for generic extension function
KT-19321 Warn if method with nullable return type always returns non-null
KT-20718 Add a quick fix for "this class has no constructor" error on 'expect' annotation classes
KT-21223 Add inspection for incomplete destructuring
KT-22420 Intention to replace a = b with b.also { a = it }
KT-39930 Add inspection for nullable Boolean in if condition
KT-40016 Replace 'a.toLowerCase() == b.toLowerCase()' with 'a.equals(b, ignoreCase = true)' inspection
KT-40283 Inspection which replaces also/apply with nested forEach to onEach
KT-40769 Add intention to replace isBlank/isNotBlank method negation

Fixes

KT-12222 Intention 'Convert to block body' should take nullability of overriden method into account when expression is of platform type
KT-14395 Lambda to Reference doesn't work for generic types
KT-15846 'Change lambda expression return type' quick fix does nothing
KT-15944 IDEA doesn't suggest to replace deprecated get set operator functions when it used as operator
KT-17222 "Convert reference to lambda" creates red code for method with default argument values
KT-18125 "Wrap with let {...}" intention not available in all cases
KT-20438 Naming convention inspections: factory functions that are named like classes are flagged
KT-24138 Incorrect behavior in "convert reference to lambda" with new inference enabled, on function reference with default arguments
KT-29844 "Create class from usage" should mark constructor of created class as internal if its parameters have internal visibility
KT-30928 "Show hints for suspend calls" is too easy to enable and hard to disable
KT-31749 "Surround with null check" produces incorrect check for 'in' expression
KT-32963 Don't suggest java directory of a JVM source set in multiplatform project as a target for Create actual quick fix
KT-33211 Quickfix "add parameter" for method references should infer functional type instead of KFunction
KT-33258 "Merge 'if's" intention drops comment before nested if
KT-34572 Convert to block body action improperly works with suppress annotations
KT-35128 Intention Convert member to extension hides property delegate text with single line comment
KT-35214 Intention Put parameters on one line: don't suggest if parameters has end-of-line comments
KT-35320 False positive "Replace explicit parameter 'x' with 'it'" in 'when' expression which returns lambda
KT-35525 False positive intention for 'run': "Convert to 'let'" when invoked without receiver
KT-35526 Intention "Eliminate argument of 'when'" is broken for 'when' expression without 'else' branch
KT-35805 FoldInitializerAndIfToElvis: should not add new line for multiline initializer
KT-36051 IfThenToSafeAccessInspection: do not report if condition is SENSELESS_COMPARISON
KT-37748 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter
KT-37841 IllegalStateException after "add non-null asserted call" on nullable function reference
KT-38139 False negative "Add suspend modifier" quickfix when suspend function is called in inline lambda
KT-38267 False positive "Call on collection type may be reduced" with Java platform types: suggested to reduce 'mapNotNull' call to 'map'
KT-38282 False positive "Remove redundant spread operator" inspection with array as class property or fun argument
KT-39200 False positive "Redundant qualifier name" with same-named member object and companion property
KT-39263 False positive "Variable should be inlined" for override value in initialized object
KT-39311 Batch quick fix name for "Change file's package" is truncated
KT-39393 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter for outer function
KT-39454 False positive "Unused symbol" with private anonymous object property
KT-39467 False negative "Move variable declaration into when" if a variable declaration is placed on a new line
KT-39490 'Wrap with ?.let' quickfix put the receiver in let lambda
KT-39552 Merge 'if's intention drops comment after nested if
KT-39604 "Package directive doesn't match file location" quick fix does not insert a space between keyword package and the package name
KT-39772 "Redundant 'Unit'" should support lambdas
KT-40215 "Create abstract function" quick fix suggested even though surrounding class is non-abstract
KT-40448 "Convert call chain into sequence": support functions added in Kotlin 1.4
KT-40558 False positive "Move to class body" intention on data class constructor property
KT-41338 False positive "Redundant 'asSequence' call" when Map.Entry properties are used.
KT-41615 "Unused equals expression" inspection: highlight whole expression with yellow background

IDE. JS

KT-39319 KJS: Support debugging through new Intellij 202 API
KT-41328 KJS / Gradle: explicitApi mode doesn't work

IDE. KDoc

KT-17926 IDE should show documentation for a class if the constructor has no docs.
KT-19069 KDoc: show default argument values
KT-37132 Redundant @NotNull annotation in a Quick Documentation pop-up

IDE. Misc

KT-39327 Get rid of usages of internal classes ModuleOrderEntryImpl and LibraryImpl
KT-40455 Improve support for EditorConfig

IDE. Navigation

KT-24616 Find usages fails to find setter usage
KT-38762 "Cannot access 'java.io.Serializable' which is a supertype of 'kotlin.Int'" brokes navigation to constructor parameter declaration
KT-39558 Call Hierarchy shows references from KDoc
KT-40788 "Find usages" on Java getter overridden in Kotlin doesn't find synthetic property usage when it is called without base declaration
KT-40960 Unable to find usages in java of Kotlin constructor in library when sources is attached.

IDE. Project View

KT-37528 'Add Kotlin File/Class' suggests file before class

IDE. Refactorings

KT-19744 "Change Signature" is not available on constructor keyword in primary constructor
KT-22170 "Change Signature" ignores Java usages of methods marked with @JvmStatic
KT-37517 Invalid qualified name on copy-paste in build.gradle.kts

IDE. Run Configurations

KT-24463 MPP, Intellij runner: Run does not add resource directory to classpath
KT-36370 Hide run gutter icons for not yet implemented targets in multiplatform projects
KT-39788 MPP, Gradle runner: Run does not add resource directory to classpath on project reopen without Gradle sync

IDE. Scratch

KT-40557 IDE / Scratch: .kt files are treated as Kotlin scratches, opening fails

IDE. Script

KT-35825 Custom kotlin scripts have no project import suggestions in sub modules.
KT-39796 Performance of KotlinScriptDependenciesClassFinder

IDE. Tests Support

KT-28854 Run/Debug configurations: "Redirect input from" option is not available for Kotlin apps
KT-36909 IDE attempts to run non-JVM tests launched from context menu as JVM ones

IDE. Wizards

KT-37965 New Project wizard 1.4+: adding JUnit5 test library add dependency to runner
KT-40527 Node.JS application template in New Project Wizard
KT-40874 Open new project wizard help page in browser when clicking help button in new project wizard
KT-41417 Add react template to new project wizard
KT-41418 Wizard: Support KJS compiler choice
KT-41958 New project wizard: Backend/Console applications template with Groovy DSL missing compileTestKotlin block

JavaScript

KT-39088 [ KJS / IR ] IllegalStateException: Concrete fake override IrBasedFunctionHandle
KT-39367 KJS: .d.ts generation not working for objects
KT-39378 KJS / IR: "IllegalStateException: Operation is unsupported" with binaries.executable() and external function inside for loop with Iterator as return type

Middle-end. IR

KT-40193 IR: pluginContext.referenceClass() is not resolving typealias
KT-41181 Kotlin/Native 1.4.0 compiler fails on data class with >120 fields

Native. C and ObjC Import

KT-41639 Use LazyIR for enums and structs from cached libraries
KT-41655 Native: "type cnames.structs.S of return value is not supported here: doesn't correspond to any C type" when accessing forward-declared-struct-typed C global variable

Native. ObjC Export

KT-38641 Kotlin-Multiplatform: Objective-C description method name collision in Swift

Tools. Android Extensions

KT-39981 Android parcel 'java.lang.VerifyError: Bad return type'

Tools. CLI

KT-35111 Extend CLI compilers help with link to online docs

Tools. Commonizer

KT-41220 [Commonizer] Short-circuit type aliases
KT-41247 [Commonizer] Missed supertypes in commonized class
KT-41643 Commonizer exception for targets [ios_x64], [macos_x64]

Tools. Gradle

KT-33908 Make Kotlin Gradle plugin compatible with the Gradle configuration cache
KT-35341 KotlinCompile: Symlinked friend paths are no longer supported

Tools. Gradle. JS

New Features

KT-35330 Allow to customise generated package.json
KT-39825 Provide single point of Webpack configuration in Gradle script
KT-41054 Support Yarn resolutions
KT-41340 Add flag to suppress kotlin2js deprecation message
KT-41566 Kotlin/JS: Support JavaScript Library distribution

Fixes

KT-39515 package.json is regenerated without a visible reason
KT-39995 Collect statistic about generateExternals feature
KT-40087 Kotlin/JS, IR backend: browserRun: update in continuous mode fails: "ENOENT: no such file or directory" referring output .js
KT-40159 Implement workaround / fix for webpack's "window is not defined"
KT-40178 Browser run task prints output in TeamCity format
KT-40201 Kotlin/JS: Gradle: public package.json has empty devDependencies {}
KT-40342 [Gradle, JS, Maven] "Cannot find module" generating fake NPM module from Maven dependendency
KT-40462 Collect statistic about usages of kotlin.js.generate.executable.default option
KT-40753 Type script definition file is not referenced as types in the package.json
KT-40812 Node.JS run working directory
KT-40865 KJS / Gradle: Registering a task with a type that directly extends AbstractTask has been deprecated
KT-41125 Bump NPM versions in 1.4.20
KT-41286 KJS / Gradle: args order in runTask is changed in 1.4.0
KT-41475 KJS / Gradle: debug mode doesn't support custom launchers in karma config
KT-41662 Kotlin/JS: with CSS support mode == "extract" browser test fails even without CSS usage: "Error in config file!"

Tools. Gradle. Native

KT-39764 Assertions are disabled when running K/N compiler in Gradle process
KT-39999 Cocoapods plugin's dummy header cannot be compiled
KT-41367 CocoaPods Gradle plugin: support git repository dependency

Tools. Incremental Compile

KT-37446 Incremental analysis for Java sources fails when run on JDK 11

Tools. J2K

KT-20421 J2K: SUPERTYPE_NOT_INITIALIZED for object extending base class
KT-37298 J2K: implicit widening conversion for whole argument expression is transformed to cast on subexpression
KT-38879 J2K loses class annotations when converting class to object
KT-39149 J2K fails with augmented assignment operators when multiplying int by a non-int
KT-40359 J2K: Conversion of invalid octal numbers throws NumberFormatException
KT-40363 J2K: Converting HEX integer literal in for-loop throws NumberFormatException

Tools. Scripts

KT-38404 Scripting API: Provide Location of Annotation Usage

Open source →

File	Sha256
kotlin-compiler-1.4.10.zip	bb1a21d70e521a01ae104e99a082a6e7bb58699b86347049da521d175d0dace7
kotlin-native-linux-1.4.10.tar.gz	daedd047cfacb9cff064eae705c54d2ed61ef44b61c1ec944066603b8e9a373c
kotlin-native-macos-1.4.10.tar.gz	e84f1622a6160a44e1f821d7539771a52389cdf3c9acaa94534b079a571503f3
kotlin-native-windows-1.4.10.zip	7728814be6f3f7906f9d55deff7ce15165c5a21f0f59ad412de815d1dab0ec1f

1.4.013 Aug 2020Deprecated

`KT-40234` Deprecation level "hidden" has no effect on callable reference argument

The release contents the JVM version of the Kotlin compiler, and also the Kotlin/Native compiler for the supported platforms: Linux, macOS and Windows.

Changelog

1.4.0

Compiler

New Features

KT-23729 Provide a way to generate JVM default method bodies in interfaces delegating to DefaultImpls
KT-30330 Introduce KotlinNothingValueException and throw it instead of NPE on expressions of type Nothing
KT-38435 Support suspend conversion on callable references in JVM backend

Fixes

KT-35483 NI: compatibility mode
KT-39728 Declarations from kotlin.reflect resolved to expect-classes even in JVM modules in IDE
KT-40153 REPL IDE services completion fails on imports completion
KT-40404 Mixed named/positional arguments: argument can be passed twice
KT-40544 NI: "TYPE_MISMATCH: Required: MutableList<out T!> Found: List<T>" caused by Java interface function
KT-40555 NI: Spread operator allows inferred nullable types
KT-40646 NI: TYPE_MISMATCH: "inferred type is Unit but Observer<T> was expected" caused by LieData.observe inference
KT-40691 False positive CAPTURED_VAL_INITIALIZATION with EXACTLY_ONCE contract
KT-40693 UnsupportedOperationException: no descriptor for type constructor of (CapturedType(out TResult)..CapturedType(out TResult)?)
KT-40824 Usages of a typealias lose nullability and annotations in deserialization
KT-40843 Unhandled exception for suspending methods that return Result type
KT-40869 Recursion computation inside compiler resolve on a correct code
KT-40893 Error "Captured values initialization is forbidden due to possible reassignment" when attempting to use the plusAssign operator with a java list inside an inline function
KT-40919 kotlin.collections.ArrayDeque requires an explicit import when compiling with kotlinc 1.4-RC and -language-version 1.3
KT-40920 Regression in JvmDefault: incorrect access to missing DefaultImpls on default methods in Java interface overriding Kotlin interface
KT-40978 Prohibit using suspend functions as SAM in fun interfaces

Kotlin/Native

Objective-C/Swift interop:
- Reworked exception handling (GH-3822, GH-3842)
- Enabled support for Objective-C generics by default (GH-3778)
- Support for Kotlin’s suspending functions (GH-3915)
- Handle variadic block types in ObjC interop (KT-36766)
Added native-specific frontend checkers (implemented in the main Kotlin repository: GH-3293, GH-3091, GH-3172)
.dSYMs for release binaries on Apple platforms (GH-4085)
Improved compilation time of builds with interop libraries by reworking cinterop under the hood.
Experimental mimalloc allocator support (-Xallocator=mimalloc) to improve execution time performance. (GH-3704)
Tune GC to improve execution time performance
Various fixes to compiler caches and Gradle daemon usage

Docs & Examples

KT-35218 Fix misleading in JavaDoc for createTempDir/createTempFile
KT-36981 Provide a visual illustration of source sets structure generated by ios(), watchos(), tvos() presets
KT-38050 Language Guide: MPP reference: add sample of language settings for all roots instead of common root only

IDE

KT-30265 IDE, MPP: False negative TYPE_PARAMETER_AS_REIFIED in common code
KT-40494 UAST: "NoSuchElementException: No element of given type found" with use-site target annotation
KT-40639 Shift IDE plugins updater numbers for Kotlin plugin

IDE. Code Style, Formatting

KT-40636 Hard freeze on formatter: infinite recursion

IDE. Gradle Integration

KT-30116 IDE: Unresolved reference in MPP module (androidMain source set) for annotation from common module (defined in commonMain and with JVM target)

IDE. Gradle. Script

KT-34552 Deadlock in ScriptDefinitionsManager
KT-40675 Gradle build file is not highlighted until navigating to symbol

IDE. JS

KT-40461 Create new projects with kotlin.js.generate.executable.default=false

IDE. Script

KT-39547 Kotlin script support freezes IDEA
KT-40242 gradle.kts: Deadlock in ScriptClassRootsUpdater

IDE. Wizards

KT-36153 New Project Wizard: provide more referential info on project structure editor screen
KT-39904 New Project wizard 1.4: update Frontend Application to make it run with JS IR
KT-40149 Gradle project wizard: templates for Kotlin/JS are not properly formatted

JavaScript

KT-25859 JS: support function references to functions with vararg if expected type ends with repeated vararg element type
KT-40083 K/JS-IR: java.lang.IllegalStateException: has not acquired a symbol yet
KT-40892 KJS, IR: Unresolved references on importing classes from kotlinx-nodejs

Libraries

KT-39051 Libraries native artifacts are published without sources

Tools. Gradle

KT-27816 Provide a possibility to specify intermediate source sets between platform-agnostic and platform-specific test source sets
KT-37720 Replace ArtifactTransform with TransformAction
KT-40559 Adding the stdlib by default triggers warning in the Android Gradle Plugin

Tools. Gradle. JS

KT-40093 Incorrect updating version of Kotlin/JS dependencies in package.json

Tools. Gradle. Multiplatform

KT-27320 Provide a way to reuse same sources for similar Native target
KT-40058 NPE from mpp gradle plugin on kotlinx.benchmarks

Tools. Gradle. Native

KT-40801 Gradle CocoaPods integration: Cannot change a framework name

1.4-RC

Backend. Native

KT-40209 java.lang.UnsupportedOperationException: org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl@76484173
KT-40367 Kotlin/Native-Swift interop (iOS): Array member initialization failing in release builds

Compiler

Fixes

KT-31025 Type mismatch when callable reference is resolved with a functional expected type and SAM conversion
KT-37388 Consider relaxing rules about inferring Nothing inside special constructions (if, try, when)
KT-37717 NI: "IllegalStateException: Error type encountered" with @BuilderInference
KT-38427 New inference in branched conditions (if, when) results in odd behavior with inconsistent compiler warnings and runtime errors
KT-38899 NI: False positive IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION leads to NPE
KT-39468 NI: overload resolution ambiguity between functions passing T and Foo<T> with a contravariant receiver
KT-39618 NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER: unable to infer generic type on @BuilderInference annotated lambda parameter with receiver type
KT-39633 NI: Incorrect type parameter instantiation based on contravariant type argument
KT-39691 NI: Missing SAM conversion for nullable lambda
KT-39860 Make Kotlin binaries publicly available (set KotlinCompilerVersion.IS_PRE_RELEASE = false)
KT-39900 NI: Incorrect type inference in a lambda returning Unit
KT-39925 New JVM default compilation mode doesn't check that JVM target is 1.8
KT-39943 Write information about all-compatibility mode in metadata
KT-39953 NI: ClassCastException "cannot be cast to java.lang.Void" with if-else in return statement in ANdroid project
KT-40045 NI: lambda’s receiver type isn't inferred properly
KT-40057 NI: provideDelegate org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: wrong bytecode generated for static initializer
KT-40060 NI: postponed variable from the builder inference flows to back-end and leads to throw an exception
KT-40112 Kotlin Gradle DSL: COMPATIBILITY_WARNING on kotlin.sourceSets block
KT-40113 Kotlin Gradle DSL: "Expression 'main' cannot be invoked as a function" for distributions.main DSL block
KT-40128 Introduce compiler key to disable compatibility resolution mechanism for new inference features
KT-40151 NI: postponed variable isn't substituted for top-level CR inside builder inference
KT-40214 AbstractMethodError in gradle subplugin which is used in Android app
KT-40234 Deprecation level "hidden" has no effect on callable reference argument
KT-40247 NI: false positive "function should be called from coroutine or another suspend function" for suspend invoke operator in try-catch
KT-40254 Rewrite at slice with two callable reference arguments
KT-40269 NI: "disabled Unit conversions" error has appeared on green code
KT-40337 NI: false positive "function should be called from coroutine or another suspend function" for suspend invoke operator in when block
KT-40406 Prohibit reflection on adapted callable references

IDE

KT-39968 Paths in KotlinJavaRuntime library aren't updated after you run IDE from a different directory
KT-39989 NullPointerException when opening Kotlin facets in Project Structure dialog in IDEA 192
KT-40311 Create change_notes for 1.4 in IDE plugin description

IDE. Debugger

KT-39808 (CoroutineDebugger) Doesn't start with kotlinx-coroutines-core >= 1.3.6
KT-40073 (CoroutineDebugger) Change minimum supported kotlinx.coroutines version to 1.3.8*
KT-40172 Restored frame variables isn't shown for suspended coroutines
KT-40635 Coroutines Debugger: make IDE plugin accept coroutines 1.3.8-rc* versions as well

IDE. Gradle Integration

KT-38744 No dependency between Android test and commonTest source sets with kotlin.mpp.enableGranularSourceSetsMetadata=true
KT-39037 'None of the consumable configurations have attributes' in MPP IDE import with transitive project dependency on self

IDE. Gradle. Script

KT-31137 IntelliJ would get very slow when editing gradle buildSrc(using the kotlin dsl)
KT-36078 Gradle Kotlin script context is not reloaded when gradle/wrapper/gradle-wrapper.properties file is changed
KT-39317 ISE “Calling invokeAndWait from read-action leads to possible deadlock.” on importing simple Gradle-based project in nightly IJ

IDE. Inspections and Intentions

KT-28662 Inspection to flag usage of the wrong Transient annotation on Kotlin Serializable class
KT-34209 Switch default behaviour in 1.4 for insertion (to build script) via quick fix of the compiler option enabling inline classes
KT-36131 Suggest to add a missing module dependency on an unresolved reference in Kotlin code
KT-37462 Add "Add dependency to module" quickfix in multimodule Maven project
KT-39869 Add whole project migration usages of kotlin.browser.* & kotlin.dom.* to kotlinx.browser.* & kotlinx.dom.* respectively

IDE. Wizards

KT-40004 New Project wizard 1.4+: no https://dl.bintray.com/kotlin/kotlinx repository is added for kotlinx-html
KT-40037 New Project wizard: update Ktor version
KT-40092 Wizard: the templates panel on mac OS is too wide
KT-40232 New Wizard: Android Sdk path doesn't have backslash escaping on Windows
KT-40371 New Project Wizard: Frontend Application / Library results in broken run configuration
KT-40377 New Project Wizard: Frontend Application defines NPM dependencies that are unnecessary with Kotlin 1.4-RC+
KT-40378 New Project Wizard: Frontend Application, Disabling JavaScript test framework has no effect
KT-40407 Wizard: do not add stdlib by default for Gradle projects in wizard

JS. Tools

KT-39984 Update dukat version in toolchain near to release of 1.4-RC

JavaScript

KT-32186 Make sure K/JS Reflection API documentation is correct and fix it.
KT-37563 K/JS: stacktrace is not captured for exceptions without primary constructor inherited from Exception/Error
KT-37752 Generated typescript incorrect for constructors of derived classes
KT-37883 KJS: Generated TypeScript uses 'declare' rather than 'export'
KT-38771 JS: support non-reified type parameters in typeOf
KT-39873 Update Kotlin JavaScript wrappers due to NON_EXPORTABLE_TYPE diagnostic introduction
KT-40126 [JS / IR] NPE while compiling interfaces with invoke which is passed as a delegate
KT-40216 KJS / IR: AssertionError caused by an anonymous object in the dependency project

Libraries

KT-33069 StringBuilder common functions
KT-35972 Add contract to builder functions
KT-37101 Mark following api with DeprecatedSinceKotlin("1.4")
KT-38360 Make sure that JB libraries correctly define their npm deps and republish them (after KT-30619)
KT-38817 'capitalize' should convert digraphs to title case
KT-40168 Remove StringBuilder.capacity from common and JS parts

Middle-end. IR

KT-40520 Assert during fake-override generation

Tools. Commonizer

KT-40199 Commonizer loses nullability of abbreviated types

Tools. Compiler Plugins

KT-40036 Add diagnostic that shows is serialization plugin compatible with serialization-runtime

Tools. Gradle

KT-39755 [KJS / Gradle / Legacy mode] Directory with whitespace is not processed
KT-39809 Kotlin Gradle plugin: ServiceConfigurationError: org.jetbrains.kotlin.gradle.plugin.KotlinGradleSubplugin: Provider org.jetbrains.kotlin.gradle.internal.AndroidSubplugin not a subtype
KT-39977 Collect statistics of used -Xjvm-default options
KT-40300 Fail the build if in MPP plugin no targets configured

Tools. Gradle. JS

KT-38170 Investigate how to improve migration experience from pre 1.4.0 DSL to the new one
KT-39654 Default CSS settings in webpack has priority over user's settings
KT-39842 Kotlin/JS Gradle DSL: peerNpm dependency fails
KT-40048 [Gradle, JS] Deprecate kotlin-frontend plugin
KT-40067 [Gradle, JS] Public package.json for mixed JS/TS project
KT-40210 Fail the build when Kotlin/JS target is not (properly) configured
KT-40320 Gradle JS: make migration to the new Gradle DSL smoother

Tools. Gradle. Multiplatform

KT-32239 Custom configurations inside Kotlin JVM Gradle projects can't properly resolve multiplatform dependencies
KT-39897 [Commonizer] Fast-pass for library fragments absent for some targets

Tools. J2K

KT-39739 J2K: Access is allowed from event dispatch thread with IW lock only

Tools. kapt

KT-34604 KAPT: Flaky NPE through org.jetbrains.kotlin.kapt3.base.ProcessorLoader.doLoadProcessors
KT-36302 TypeTreeVisitor.visitMemberSelect IllegalStateException: node.sym must not be null on JDK 11
KT-39876 KAPT: Serialization of classpath structure is incorrect if there are dependencies between types in jar/dir

1.4-M3

Compiler

New Features

KT-23575 Deprecate with replacement and SinceKotlin
KT-38652 Do not generate optional annotations to class files on JVM
KT-38777 Hide Throwable.addSuppressed member and prefer extension instead

Performance Improvements

KT-38489 Compilation of kotlin html DSL increasingly slow
KT-28650 Type inference for argument type is very slow if several interfaces with a type parameter is used as an upper bound of a type parameter

Fixes

KT-15971 Incorrect bytecode generated when inheriting default arguments not from the first supertype
KT-25290 NI: "AssertionError: If original type is SAM type, then candidate should have same type constructor" on out projection of Java class
KT-28672 Contracts on calls with implicit receivers
KT-30279 Support non-reified type parameters in typeOf
KT-31908 NI: CCE on passing lambda to function which accepts vararg SAM interface
KT-32156 New inference issue with generics
KT-32229 New inference algorithm not taking into account the upper bound class
KT-33455 Override equals/hashCode in functional interface wrappers
KT-34902 AnalyzerException: Argument 1: expected I, but found R for unsigned types in generic data class
KT-35075 AssertionError: "No resolved call for ..." with conditional function references
KT-35468 Overcome ambiguity between typealias kotlin.Throws and the aliased type kotlin.jvm.Throws
KT-35494 NI: Multiple duplicate error diagnostics (in IDE popup) with NULL_FOR_NONNULL_TYPE
KT-35681 Wrong common supertype between raw and integer literal type leads to unsound code
KT-35937 Error "Declaration has several compatible actuals" on incremental build
KT-36013 Functional interface conversion not happens on a value of functional type with smart cast to a relevant functional type
KT-36045 Do not depend on the order of lambda arguments to coerce result to Unit
KT-36448 NI: fix tests after enabling NI in the compiler
KT-36706 Prohibit functional interface constructor references
KT-36969 Generate @NotNull on instance parameters of Interface$DefaultImpls methods
KT-37058 Incorrect overload resolution ambiguity on callable reference in a conditional expression with new inference
KT-37120 [FIR] False UNRESOLVED_REFERENCE for public and protected member functions and properties which are declared in object inner class
KT-37149 Conversion when generic specified by type argument of SAM type
KT-37249 false TYPE_MISMATCH when When-expression branches have try-catch blocks
KT-37341 NI: Type mismatch with combination of lambda and function reference
KT-37436 AME: "Receiver class does not define or inherit an implementation of the resolved method" in runtime on usage of non-abstract method of fun interface
KT-37510 NI infers java.lang.Void from the expression in a lazy property delegate and throws ClassCastException at runtime
KT-37541 SAM conversion with fun interface without a function fails on compiling and IDE analysis in SamAdapterFunctionsScope.getSamConstructor()
KT-37574 NI: Type mismatch with Kotlin object extending functional type passed as @FunctionalInterface to Java
KT-37630 NI: ILT suitability in a call is broken if there are CST calculation and calling function's type parameters
KT-37665 NI: applicability error due to implicitly inferred Nothing for returning T with expected type
KT-37712 No extension receiver in functional interface created with lambda
KT-37715 NI: VerifyError: Bad type on operand stack with varargs generic value when type is inferred
KT-37721 NI: Function reference with vararg parameter treated as array and missing default parameter is rejected
KT-37887 NI: Smart casting for Map doesn't work if the variable is already "smart casted"
KT-37914 NI: broken inference for a casting to subtype function within the common constraint system with this subtype
KT-37952 NI: improve lambdas completion through separation the lambdas analysis into several steps
KT-38069 Callable reference adaptation should have dependency on API version 1.4
KT-38143 New type inference fails when calling extension function defined on generic type with type arguments nested too deep
KT-38156 FIR Metadata generation
KT-38197 java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects
KT-38259 NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER for provideDelegate
KT-38337 Map delegation fails for inline classes
KT-38401 FIR: protected effective visibility is handled unprecisely
KT-38416 FIR: infinite loop in BB coroutine test 'overrideDefaultArgument.kt'
KT-38432 FIR: incorrect effective visibility in anonymous object
KT-38434 Implement resolution of suspend-conversion on FE only, but give error if suspend conversion is called
KT-38437 [FIR] String(CharArray) is resolved to java.lang.String constructor instead of kotlin.text.String pseudo-constructor
KT-38439 NI: anonymous functions without receiver is allowed if there is an expected type with receiver
KT-38473 FIR: ConeIntegerLiteralType in signature
KT-38537 IllegalArgumentException: "marginPrefix must be non-blank string" with raw strings and space as margin prefix in trimMargin() call
KT-38604 Implicit suspend conversion on call arguments doesn't work on vararg elements
KT-38680 NSME when calling generic interface method with default parameters overriden with inline class type argument
KT-38681 Wrong bytecode generated when calling generic interface method with default parameters overriden with primitive type argument
KT-38691 NI: overload resolution ambiguity if take R and () -> R, and pass literal lambda, which returns R
KT-38799 False positive USELESS_CAST for lambda parameter
KT-38802 Generated code crashes by ClassCastException when delegating with inline class
KT-38853 Backend Internal error: Error type encountered: Unresolved type for nested class used in an annotation argument on an interface method
KT-38890 NI: false negative Type mismatch for values with fun keyword
KT-39010 NI: Regression with false-positive smartcast on var of generic type
KT-39013 202, ASM 8: "AnalyzerException: Execution can fall off the end of the code"
KT-39260 "AssertionError: Unsigned type expected: Int" in range
KT-39305 NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER: unable to infer deeply nested type bound when class implements generic interface
KT-39408 Using unsigned arrays as generics fails in 1.4-M2 with class cast exception
KT-39533 NI: Wrong overload resolution for methods with SAM converted function reference arguments
KT-39535 NI: Inference fails for the parameters of SAM converted lambdas with type parameters
KT-39603 Require explicit override in JVM default compatibility mode on implicit generic specialization of inherited methods in classes
KT-39671 Couldn't inline method call 'expectBody'
KT-39816 NI:ClassCastException and no IDE error with provideDelegate when DELEGATE_SPECIAL_FUNCTION_MISSING in OI
KT-32779 Rewrite at slice in array access resolution in coroutine inference
KT-39387 Can't build Kotlin project due to overload resolution ambiguity on flatMap calls
KT-39229 NI: resolution to wrong candidate (SAM-type against similar functional type)

Docs & Examples

KT-36245 Document that @kotlin.native.ThreadLocal annotation doesn't work anywhere except in Kotlin/Native
KT-37943 Conflicting overloads in the factory functions sample code in Coding Conventions Page

IDE

New Features

KT-10974 Add Code Style: Import Layout Configuration Table
KT-39065 "Join lines" should remove trailing comma on call site

Fixes

KT-9065 Wrong result when move statement through if block with call with lambda
KT-14757 Move statement up breaks code in function parameter list
KT-14946 Move statement up/down (with Ctrl+Shift+Up/Down) messes with empty lines
KT-15143 Kotlin: Colors&Fonts -> "Enum entry" should use Language Default -> Classes - Static field
KT-17887 Moving statement (Ctrl/Cmd+Shift+Down) messes with use block
KT-34187 UAST cannot get type of array access
KT-34524 "PSI and index do not match" and IDE freeze with library import from square/workflow
KT-35574 UAST: UBreakExpression in when expression should be UYieldExpression
KT-36801 IDE: Unsupported language version value is represented with "latest stable" in GUI
KT-37378 Remove IDE option "Enable new type inference algorithm..." in 1.4
KT-38003 "Analyze Data Flow from Here" should work on parameter of abstract method
KT-38173 Reified types do no have extends information
KT-38217 Make Kotlin plugin settings searchable
KT-38247 "IncorrectOperationException: Incorrect expression" through UltraLightUtils.kt: inlined string is not escaped before parsing
KT-38293 Throwable: "'codestyle.name.kotlin' is not found in java.util.PropertyResourceBundle" at KotlinLanguageCodeStyleSettingsProvider.getConfigurableDisplayName()
KT-38407 Drop components from plugin.xml
KT-38443 No error on change in property initializer
KT-38521 ISE: Loop in parent structure when converting a DOT_QUALIFIED_EXPRESSION with parent ANNOTATED_EXPRESSION
KT-38571 Rework deprecated EPs
KT-38632 Change the code style to official in tests

IDE. Code Style, Formatting

Fixes

KT-24750 Formatter: Minimum blank lines after class header does nothing
KT-31169 IDEA settings search fails to find "Tabs and Indents" tab in Kotlin code style settings
KT-35359 Incorrect indent for multiline expression in string template
KT-37420 Add setting to disable inserting empty line between declaration and declaration with comment
KT-37891 Formatter inserts empty lines between annotated properties
KT-38036 Use trailing comma setting does not apply to code example in Settings dialog
KT-38568 False positive: weak warning "Missing line break" on -> in when expression
KT-39024 Add option for blank lines before declaration with comment or annotation on separate line
KT-39079 Trailing comma: add base support for call site
KT-39123 Option Align 'when' branches in columns does nothing
KT-39180 Move trailing comma settings in Other tab

IDE. Completion

KT-18538 Completion of static members of grand-super java class inserts unnecessary qualifier
KT-38445 Fully qualified class name is used instead after insertion of delay method

IDE. Debugger

Fixes

KT-14057 Debugger couldn't step into Reader.read
KT-14828 Bad step into/over behavior for functions with default parameters
KT-36403 Method breakpoints don't work for libraries
KT-36404 Evaluate: "AssertionError: Argument expression is not saved for a SAM constructor"
KT-37486 Kotlin plugin keeps reference to stream debugger support classes after stream debugger plugin is disabled
KT-38484 Coroutines Debugger: IAE “Requested element count -1 is less than zero.” is thrown by calling dumpCoroutines
KT-38606 Coroutine Debugger: OCE from org.jetbrains.kotlin.idea.debugger.coroutine.proxy.mirror.BaseMirror.isCompatible
KT-39143 NPE on setCurrentStackFrame to Kotlin inner compiled class content
KT-39412 Failed to find Premain-Class manifest attribute when debugging main method with ktor
KT-39634 (CoroutineDebugger) Agent doesn't start if using kotlinx-coroutines-core only dependency
KT-39648 Coroutines debugger doesn't see stacktraces in case of the project has kotlinx-coroutines-debug dependency

IDE. Gradle Integration

Performance Improvements

KT-39059 Poor performance of modifyDependenciesOnMppModules

Fixes

KT-35921 Gradle Import fails with "Unsupported major.minor version 52.0" on pure Java project in case "Gradle JDK" is lower 1.8 and Kotlin plugin is enabled
KT-36673 Gradle Project importing: move ModelBuilders and ModelProviders to kotlin-gradle-tooling jar
KT-36792 IDEA 2020.1: Some module->module dependencies in HMPP project are missed after import from Gradle
KT-37125 Imported modules structure for MPP project is displayed messy in UI in IDEA 2020.1
KT-37428 NPE at KotlinFacetSettings.setLanguageLevel() on the first project import
KT-38706 IDE Gradle import creates 4 JavaScript modules for MPP source sets with BOTH compiler type
KT-38767 Published hierarchical multiplatform library symbols are unresolved in IDE (master)
KT-38842 False positive [INVISIBLE_MEMBER] for internal declaration of commonMain called from commonTest
KT-39213 IDE: references from MPP project to JavaScript library are unresolved, when project and library are compiled with "both" mode
KT-39657 Language settings for intermediate source-sets are lost during import

IDE. Gradle. Script

New Features

KT-34481 *.gradle.kts: use Intellij IDEA Gradle project sync mechanics for updating script configuration

Performance Improvements

KT-34138 Deadlock in ScriptTemplatesFromDependenciesProvider
KT-38875 Deadlock in ScriptClassRootsUpdater.checkInvalidSdks

Fixes

KT-34265 Bogus "build configuration failed, run 'gradle tasks' for more information" message and other issues related to "script dependencies"
KT-34444 *.gradle.kts: special storage of all scripts configuration on one file
KT-35153 build.gradle.kts: scripts in removed subproject remain imported, but shouldn't
KT-35573 Request for gradle build script configuration only after explicit click on notification
KT-36675 move .gradle.kts ModelBuilders and ModelProviders to kotlin-gradle-tooling jar
KT-37178 build.gradle.kts: Rework the notification for scripts out of project
KT-37631 Unnecessary loading dependencies after opening build.gradle.kts after project import with Gradle 6
KT-37863 Scanning dependencies for script definitions takes too long or indefinitely during Gradle import
KT-38296 MISSING_DEPENDENCY_SUPERCLASS in the build.gradle.kts editor while Gradle runs Ok
KT-38541 "Invalid file" exception in ScriptChangeListener.getAnalyzableKtFileForScript()
KT-39104 “Gradle Kotlin DSL script configuration is missing” after importing project in IJ201, Gradle 6.3
KT-39469 Gradle version is not updated in script dependencies if the version of gradle was changed in gradle-wrapper.properties
KT-39771 Freeze 30s from org.jetbrains.kotlin.scripting.resolve.ApiChangeDependencyResolverWrapper.resolve on loading script configuration with Gradle 5.6.4

IDE. Inspections and Intentions

New Features

KT-14884 Intention to add missing "class" keyword for enum and annotation top-level declarations
KT-17209 Provide intention to fix platform declaration clash (CONFLICTING_JVM_DECLARATIONS)
KT-24522 Suggest to move typealias outside the class
KT-30263 Detect redundant conversions of unsigned types
KT-35893 Support Inspection for unnecessary asSequence() call
KT-38559 "Change JVM name" (@JvmName) quickfix: improve name suggester for generic functions
KT-38597 Expand Boolean intention
KT-38982 Add "Logger initialized with foreign class" inspection
KT-39131 TrailingCommaInspection: should suggest fixes for call-site without warnings

Fixes

KT-5271 Missing QuickFix for Multiple supertypes available
KT-11865 "Create secondary constructor" quick fix always inserts parameter-less call to this()
KT-14021 Quickfix to add parameter to function gives strange name to parameter
KT-17121 "Implement members" quick fix is not suggested
KT-17368 Don't highlight members annotated with @JsName as unused
KT-20795 "replace explicit parameter with it" creates invalid code in case of overload ambiguities
KT-22014 Intention "convert lambda to reference" should be available for implicit 'this'
KT-22015 Intention "Convert lambda to reference" should be available in spite of the lambda in or out of parentheses
KT-22142 Intentions: "Convert to primary constructor" changes semantics for property with custom setter
KT-22878 Empty argument list at the call site of custom function named "suspend" shouldn't be reported as unnecessary
KT-24281 Importing of invoke() from the same file is reported as unused even if it isn't
KT-25050 False-positive inspection "Call replaceable with binary operator" for 'equals'
KT-26361 @Deprecated "ReplaceWith" quickfix inserts 'this' incorrectly when using function imports
KT-27651 'Condition is always true' inspection should not be triggered when the condition has references to a named constant
KT-29934 False negative Change type quickfix on primary constructor override val parameter when it has wrong type
KT-31682 'Convert lambda to reference' intention inside class with function which return object produces uncompilable code
KT-31760 Implement Abstract Function/Property intentions position generated member improperly
KT-32511 Create class quick fix is not suggested in super type list in case of missing primary constructor
KT-32565 False positive "Variable is the same as 'credentials' and should be inlined" with object declared and returned from lambda
KT-32801 False positive "Call on collection type may be reduced" with mapNotNull, generic lambda block and new inference
KT-33951 ReplaceWith quickfix with unqualified object member call doesn't substitute argument for parameter
KT-34378 "Convert lambda to reference" refactoring does not work for suspend functions
KT-34677 False positive "Collection count can be converted to size" with Iterable
KT-34696 Wrong 'Redundant qualifier name' for 'MyEnum.values' usage
KT-34713 "Condition is always 'false'": quickfix "Delete expression" doesn't remove else keyword (may break control flow)
KT-35015 ReplaceWith doesn't substitute parameters with argument expressions
KT-35329 Replace 'when' with 'if' intention: do not suggest if 'when' is used as expression and it has no 'else' branch
KT-36194 "Add braces to 'for' statement" inserts extra line break and moves the following single-line comment
KT-36406 "To ordinary string literal" intention adds unnecessary escapes to characters in template expression
KT-36461 "Create enum constant" quick fix adds after semicolon, if the last entry has a comma
KT-36462 "Create enum constant" quick fix doesn't add trailing comma
KT-36508 False positive "Replace 'to' with infix form" when 'to' lambda generic type argument is specified explicitly
KT-36930 Intention "Specify type explicitly" adds NotNull annotation when calling java method with the annotation
KT-37148 "Remove redundant .let call doesn't remove extra calls
KT-37156 "Unused unary operator" inspection highlighting is hard to see
KT-37173 "Replace with string templates" intention for String.format produces uncompilable string template
KT-37181 Don't show "Remove redundant qualifier name" inspection on qualified Companion imported with star import
KT-37214 "Convert lambda to reference" with a labeled "this" receiver fails
KT-37256 False positive PlatformExtensionReceiverOfInline inspection if a platform type value is passed to a nullable receiver
KT-37744 "Convert lambda to reference" inspection quick fix create incompilable code when type is inferred from lambda parameter
KT-37746 "Redundant suspend modifier" should not be reported for functions with actual keyword
KT-37842 "Convert to anonymous function" creates broken code with suspend functions
KT-37908 "Convert to anonymous object" quickfix: false negative when interface has concrete functions
KT-37967 Replace 'invoke' with direct call intention adds unnecessary parenthesis
KT-37977 "Replace 'invoke' with direct call" intention: false positive when function is not operator
KT-38062 Reactor Quickfix throws NotImplementedError for Kotlin
KT-38240 False positive redundant semicolon with as cast and not unary operator on next line
KT-38261 Redundant 'let' call removal leaves ?. operator and makes code uncompilable
KT-38310 Remove explicit type annotation intention drops 'suspend'
KT-38492 False positive "Add import" intention for already imported class
KT-38520 SetterBackingFieldAssignmentInspection throws exception
KT-38649 False positive quickfix "Assignment should be lifted out of when" in presence of smartcasts
KT-38677 Invalid psi tree after Lift assigment out of...
KT-38790 "Convert sealed subclass to object" for data classes doesn't remove 'data' keyword
KT-38829 'Remove redundant backticks' can be broken with @ in name
KT-38831 'Replace with assignment' can be broken with fast code change
KT-38832 "Remove curly braces" intention may produce CCE
KT-38948 False positive quickfix "Make containing function suspend" for anonymous function
KT-38961 "Useless call on collection type" for filterNotNull on non-null array where list return type is expected
KT-39069 Improve TrailingCommaInspection
KT-39151 False positive inspection to replace Java forEach with Kotlin forEach when using ConcurrentHashMap

IDE. JS

KT-39275 Kotlin JS Browser template for kotlin dsl doesn't include index.html

IDE. KDoc

KT-32163 Open Quick Documentation when cursor inside function / constructor brackets

IDE. Navigation

KT-32245 Method in Kotlin class is not listed among implementing methods
KT-33510 There is no gutter icon to navigate from actual to expect if expect and the corresponding actual declarations are in the same file
KT-38260 Navigation bar doesn't show directories of files with a single top level Kotlin class
KT-38466 Top level functions/properties aren't shown in navigation panel

IDE. Project View

KT-36444 Structure view: add ability to sort by visibility
KT-38276 Structure view: support visibility filter for class properties

IDE. REPL

KT-38454 Kotlin REPL in IntelliJ doesn't take module's JVM target setting into account

IDE. Refactorings

KT-12878 "Change signature" forces line breaks after every parameter declaration
KT-30128 Change Signature should move lambda outside of parentheses if the arguments are reordered so that the lambda goes last
KT-35338 Move/rename refactorings mess up code formatting by wrapping lines
KT-38449 Extract variable refactoring is broken by NPE
KT-38543 Copy can't work to package with escaped package
KT-38627 Rename package refactorings mess up code formatting by wrapping lines

IDE. Run Configurations

KT-34516 Don't suggest incompatible targets in a drop-down list for run test gutter icon in multiplatform projects
KT-38102 DeprecatedMethodException ConfigurationFactory.getId

IDE. Scratch

KT-38455 Kotlin scratch files don't take module's JVM target setting into account

IDE. Script

KT-39791 Kotlin plugin loads VFS in the output directories

IDE. Structural Search

KT-39721 Optimize Kotlin SSR by using the index
KT-39733 Augmented assignment matching
KT-39769 "When expressions" predefined template doesn't match all when expressions

IDE. Wizards

KT-38673 New Project Wizard: multiplatform templates are generated having unsupported Gradle version in a wrapper
KT-38810 Incorrect order of build phases in Xcode project from new wizard
KT-38952 Remove old new_project_wizards
KT-39503 New Project wizard 1.4+: release kotlinx.html version is added to dependencies with milestone IDE plugin
KT-39700 Wizard: group project templates on the first step by the project type
KT-39770 CSS Support in Kotlin wizards
KT-39826 Fix Android app in New Template Wizard
KT-39843 Change imports in JS/browser wizard

JS. Tools

KT-32273 Kotlin/JS console error on hot reload
KT-39498 Update dukat version in toolchain near to release of 1.4-M3

JavaScript

KT-29916 Implement typeOf on JS
KT-35857 Kotlin/JS CLI bundled to IDEA plugin can't compile using IR back-end out of the box
KT-36798 KJS: prohibit using @JsExport on a non-top-level declaration
KT-37771 KJS: Generated TypeScript does not recursively export base classes (can fail with generics)
KT-38113 Review public API of JS stdlib for IR BE
KT-38765 [JS / IR] AssertionError: class EventEmitter: Super class should be any: with nested class extending parent class
KT-38768 KJS IR: generate ES2015 (aka ES6) classes

Libraries

New Features

KT-11253 Function to sum long or other numeric property of items in a collection
KT-28933 capitalize() with Locale argument in the JDK stdlib
KT-34142 Create SortedMap with Comparator and items
KT-34506 Add Sequence.flatMap overload that works on Iterable
KT-36894 Support flatMapIndexed in the Collections API
KT-38480 Introduce experimental annotation for enabling overload resolution by lambda result
KT-38708 minOf/maxOf functions to return min/max value provided by selector
KT-39707 Make some interfaces in stdlib functional

Performance Improvements

KT-23142 toHashSet is suboptimal for inputs with a lot of duplicates

Fixes

KT-21266 Add module-info for standard library artifacts
KT-23322 Document 'reduce' operation behavior on empty collections
KT-28753 Comparing floating point values in array/list operations 'contains', 'indexOf', 'lastIndexOf': IEEE 754 or total order
KT-30083 Annotate KTypeProjection.STAR with JvmField in a compatible way
KT-30084 Annotate functions in KTypeProjection.Companion with JvmStatic
KT-31343 Deprecate old String <-> CharArray, ByteArray conversion api
KT-34596 Add some validation to KTypeProjection constructor
KT-35978 Review and remove experimental stdlib API status for 1.4
KT-38388 Document fromIndex and toIndex parameters
KT-38854 Gradually change the return type of collection min/max functions to non-nullable
KT-39023 Document split(Pattern) extension differences from Pattern.split
KT-39064 Introduce minOrNull and maxOrNull extension functions on collections
KT-39235 Lift experimental annotation from bit operations
KT-39237 Lift experimental annotation from common StringBuilder
KT-39238 Appendable.appendRange - remove nullability
KT-39239 Lift experimental annotation from String <-> utf8 conversion api
KT-39244 KJS: update polyfills, all or most of them must not be enumerable
KT-39330 Migrate declarations from kotlin.dom and kotlin.browser packages to kotlinx.*

Middle-end. IR

KT-31088 need a way to compute fake overrides for pure IR
KT-33207 Kotlin/Native: KNPE during deserialization of an inner class
KT-33267 Kotlin/Native: Deserialization error for an "inner" extension property imported from a class
KT-37255 Make psi2ir aware of declarations provided by compiler plugins

Reflection

KT-22936 Not all things can be changed to createType yet, and now defaultType methods are starting to fail
KT-32241 Move KType.javaType into stdlib from reflect
KT-34344 KType.javaType implementation throws when invoked with a typeOf<T>()
KT-38491 IllegalArgumentException when using callBy on function with inline class parameters and default arguments
KT-38881 Add KClass.isFun modifier of functional interfaces to reflection

Tools. Android Extensions

KT-25807 Kotlin extension annotation @Parcelize in AIDL returns Object instead of original T

Tools. CLI

KT-30211 Support a way to pass arguments to the underlying JVM in kotlinc batch scripts on Windows
KT-30778 kotlin-compiler.jar contains shaded but not relocated kotlinx.coroutines
KT-38070 Compiler option to bypass prerelease metadata incompatibility error
KT-38413 Add JVM target bytecode version 14

Tools. Compiler Plugins

KT-39274 [KJS / IR] Custom serializer for class without zero argument constructor doesn't compile

Tools. Gradle

KT-25428 Kotlin Gradle Plugin: Use new Gradle API for Lazy tasks
KT-34487 Gradle build fails with "Cannot run program "java": error=7, Argument list too long
KT-35957 MPP IC fails with "X has several compatible actual declarations" error
KT-38250 Drop support for Gradle versions older than 5.3 in the Kotlin Gradle plugin

Tools. Gradle. JS

New Features

KT-30619 Support NPM transitive dependencies in multi-platform JS target
KT-38286 [Gradle, JS] Error handling on Webpack problems

Fixes

KT-31669 Gradle/JS: rise error when plugin loaded more than once
KT-32531 [Gradle/JS] Add scoped NPM dependencies
KT-34832 [Kotlin/JS] Failed build after webpack run (Karma not found)
KT-35194 Kotlin/JS: browserRun fails with "address already in use" when trying to connect to local server
KT-35611 Kotlin Gradle plugin should report kotlin2js plugin ID as deprecated
KT-35641 Kotlin Gradle plugin should report kotlin-dce-js plugin ID as deprecated
KT-36410 JS: Collect stats about IR backend usage
KT-36451 KJS Adding npm dependency breaks Webpack devserver reloading
KT-37258 Kotlin/JS + Gradle: in continuous mode kotlinNpmInstall time to time outputs "ENOENT: no such file or directory" error
KT-38109 [Gradle, JS] Error handling on Karma launcher problems
KT-38331 Add an ability to control generating externals for npm deps individually
KT-38485 [Gradle, JS] Unable to configure JS compiler with string
KT-38683 Remove possibility to set NPM dependency without version
KT-38990 Support multiple range versions for NPM dependencies
KT-38994 Remove possibility to set NPM dependency with npm(org, name, version)
KT-39109 ArithmeticException: "/ by zero" caused by kotlinNodeJsSetup task with enabled gradle caching on Windows
KT-39210 Kotlin/JS: with both JS and MPP modules in the same project Gradle configuration fails on nodejs {} and browser {}
KT-39377 Use standard source-map-loader instead of custom one

Tools. Gradle. Multiplatform

KT-39184 Support publication of Kotlin-distributed libraries with Gradle Metadata
KT-39304 Gradle import error java.util.NoSuchElementException: Key source set foo is missing in the map on unused source set

Tools. Gradle. Native

KT-37514 CocoaPods Gradle plugin: Support building from terminal projects for several platforms
KT-38440 Make error message about missing Podfile path for cocoapods integration actionable for a user
KT-38991 Gradle MPP plugin: Enable parallel in-process execution for K/N compiler
KT-39935 Support overriding the KotlinNativeCompile task sources
KT-37512 Cocoapods Gradle plugin: Improve error logging for external tools

Tools. J2K

KT-35169 Do not show "Inline local variable" popup during "Cleaning up code" phase of J2K
KT-38004 J2K breaks java getter call in java code
KT-38450 J2K should convert Java SAM interfaces to Kotlin fun interfaces

Tools. JPS

KT-27458 The Kotlin standard library is not found in the module graph ... in a non-Kotlin project.
KT-29552 Project is completely rebuilt after each gradle sync.

Tools. Scripts

KT-37766 Impossible to apply compiler plugins onto scripts with the new scripting API

Tools. kapt

KT-29355 Provide access to default values for primary constructor properties

1.4-M2

Compiler

New Features

KT-37432 Do not include annotations fields into 'visibility must be explicitly specified' check in api mode

Performance Improvements

KT-27362 Anonymous classes representing function/property references contain rarely used methods
KT-35626 NI: Performance problem with many type parameters
KT-36047 Compiler produces if-chain instead of switch when when subject captured as variable
KT-36638 Use 'java/lang/StringBuilder.append (C)Ljava/lang/StringBuilder;' when appending single character in JVM_IR
KT-37389 Avoid type approximation during generation constraints with EQUALITY kind
KT-37392 Avoid substitution and type approximation for simple calls
KT-37546 NI: high memory and CPU consumption due to creating useless captured types (storing in approximated types cache, unneeded computations)

Fixes

KT-11265 Factory pattern and overload resolution ambiguity
KT-27524 Inline class is boxed when used with suspend modifier
KT-27586 ClassCastException occurs if the Result (or any other inline class) is returned from a lambda
KT-30419 Use boxed version of an inline class in return type position for covariant and generic-specialized overrides
KT-31163 FIR: consider replacing comparisons with compareTo calls and some additional intrinsics
KT-31585 ClassCastException with derived class delegated to generic class with inline class type argument
KT-31823 NI: Type mismatch with a star projection and UnsafeVariance
KT-33119 Pre-increment for inline class wrapping Int compiles to direct increment instead of inc-impl
KT-33715 Kotlin/Native: metadata compiler
KT-34048 IllegalAccessError when initializing val property in EXACTLY_ONCE lambda
KT-34433 NI: Type mismatch with a star projection and UnsafeVariance
KT-35133 FIR Java: don't set 'isOperator' for methods with non-operator names
KT-35234 ClassCastException with creating an inline class from a function reference of covariant or generic-specialized override
KT-35406 Generic type implicitly inferred as Nothing with no warning
KT-35587 Plain namespace strings in JvmNameResolver.PREDEFINED_STRINGS are prone to namespace changes during jar relocation.
KT-36044 NI: premature fixation a type variable if there were nested lambdas (constraint source was the deepest lambda)
KT-36057 [FIR] Incorrect smartcast
KT-36069 NI: TYPE_MISMATCH caused by incorrect inference to Nothing
KT-36125 Callable reference resolution ambiguity error is not displayed properly in the IDE
KT-36191 IDE locks loading packages and editing file containing try keyword inside string template
KT-36222 NI: Improve error message about nullability mismatch for a generic call
KT-36249 NI doesn't use upper bound for T of called function during infer return type and as a result infer it to Any? if the resulting type was intersection type
KT-36345 FIR: record argument mapping for use in back-end
KT-36446 NI: "UnsupportedOperationException no descriptor for type constructor of IntegerLiteralType[Int,Long,Byte,Short]" with BuilderInference and delegate
KT-36758 [FIR] Unresolved callable reference to member of local class
KT-36759 [FIR] Unsupported callable reference resolution for methods with default parameters
KT-36762 [FIR] Unresolved array.clone()
KT-36764 [FIR] Bug in inference with DefinitelyNotNull types
KT-36816 NI: definitely not-null (T!!) types in invariant positions don't approximate to T inside inference process
KT-36819 NI: premature completion of lambdas, which are passed somewhere
KT-36850 Incorrect private visibility of sealed class constructors
KT-36856 Throwing exception when there is inheritance in Kotlin from Java class, which contains methods with the same JVM descriptors
KT-36879 Introduce FIR_IDENTICAL in diagnostic tests
KT-36881 FIR: completion don't runs for return expressions
KT-36887 [FIR] Unresolved member in nested lambda in initializer
KT-36905 [FIR] Unresolved in lambda in default argument position
KT-36953 AssertionError: "Unsigned type expected: null" when there is a range with an unsigned type
KT-37009 FIR: Bound smart-cast lost
KT-37027 FIR: Wrong projection on spread + varargs on non-final types
KT-37038 NI: redundant lambda's arrow breaks CST calculation for extension lambdas
KT-37043 NI: inference T to Any? if there was elvis between Java out-type and reified materialize for this type without out projection
KT-37066 [FIR] Wrong type inference for lambdas
KT-37070 [FIR] Unresolved parameters of outer lambda in scope of inner lambda
KT-37087 "IllegalStateException: Can't find method 'invoke()'" for mutable property reference in default value of an inline function parameter
KT-37091 [FIR] Wrong inferred type of when-expression if when-argument is not-null-asserted and type is not specifies explicitly
KT-37176 [FIR] Incorrect resolution mode for statements of block
KT-37302 Unexpected conversion:Int constant inferred to Long in when expression
KT-37327 FIR: Smartcast problem
KT-37343 NI: definitely not null types pre-approximation is inconsistent with OI
KT-37380 NI: broken some code with def not null types due to skip needed constraints
KT-37419 NI: UNRESOLVED_REFERENCE_WRONG_RECEIVER is reported in case lambda with receiver is returned from when expression
KT-37434 Kotlin/JS, Kotlin/Native: fun interfaces: SAM conversion to Kotlin interface is not compiled with RESOLUTION_TO_CLASSIFIER
KT-37447 Expression from annotation entry in value parameter inside value parameter should be marked as USED_AS_EXPRESSION
KT-37453 Type arguments not checked to be empty for candidates with no declared parameters
KT-37488 [FIR] Incorrect exhaustiveness checking for branches with equals to object that implements sealed class
KT-37497 NI: 'super' is not an expression, it can not be used as a receiver for extension functions
[`KT

Note truncated.

Open source →

1.3.703 Mar 2020Deprecated

`KT-34649` Deprecate -Xexperimental flag

The release contents the JVM version of the Kotlin compiler, and also the Kotlin/Native compiler for the supported platforms: Linux, macOS and Windows.

Changelog

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-34743 Support trailing comma in the compiler
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<something> 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 '<set-attribute>' 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-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<Float> 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

Open source →

1.3.6014 Nov 2019Deprecated

…com.intellij.openapi.util.Key , T) deprecated eons ago

Content

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

CHANGELOG

1.3.60

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>, 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<T>.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.<init>
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

Kotlin Native

Related Kotlin Native changelog can be found separately.

Open source →

1.3.5022 Aug 2019Deprecated

`KT-32364` Remove deprecated usages of OUT_OF_CODE_BLOCK_MODIFICATION_COUNT and write a replacement for Kotlin language

Content

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

CHANGELOG

1.3.50

Compiler

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

Docs & Examples

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

IDE

New Features

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

Fixes

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

IDE. Completion

KT-9792 Don't propose the same name for arguments of lambda on completion of function call with lambda template
KT-29572 Smart completing anonymous object uses incorrect code style
KT-25264 Freeze in Kotlin file on completion
KT-32519 Keyword completion: support fixing layout and typo tolerance

IDE. Debugger

New Features

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

Fixes

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

IDE. Gradle

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

IDE. Gradle. Script

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

IDE. Inspections and Intentions

New Features

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

Fixes

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

IDE. JS

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

IDE. KDoc

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

IDE. Multiplatform

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

IDE. Navigation

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

IDE. Refactorings

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

IDE. Scratch

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

IDE. Script

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

IDE. Tests Support

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

IDE. Wizards

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

JS. Tools

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

Libraries

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

Reflection

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

Tools. Daemon

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

Tools. CLI

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

Tools. Compiler Plugins

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

Tools. Gradle

New Features

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

Performance Improvements

KT-29538 AndroidSubPlugin#getCommonResDirectories is very slow

Fixes

KT-29343 Kotlin MPP source set dependencies are not properly propagated to tests in Android projects
KT-30691 Gradle, JS tests: Parent operation with id 947 not available when all tests passed
KT-31917 Gradle, JS: transitive dependency between compilations in same project doesn't work
KT-31985 Gradle, JS: webpack not working on windows
KT-32072 Gradle, JS: browser() in DSL triggers project.evaluate()
KT-32204 In an MPP, a dependency that is added to a non-root source set is incorrectly analyzed for source sets visibility
KT-32225 In an MPP, if a dependency is added to a source set that does not take part in published compilations, it is not correctly analyzed in source set visibility inference
KT-32564 Provide a flag to enable/disable hierarchical multiplatform mechanism in Gradle
KT-31023 Update Gradle module metadata warning in MPP publishing
KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"
KT-32210 Kapt randomly fails with java.io.UTFDataFormatException
KT-32706 Gradle target "jsBrowserWebpack" should use output of JS compile task as input
KT-32697 [Tests] org.jetbrains.kotlin.gradle.SubpluginsIT
KT-33246 Kotlin JS & Native tests + Gradle 5.6: No value has been specified for property 'binaryResultsDirectory'

Tools. Incremental Compile

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

Tools. J2K

New Features

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

Fixes

KT-15791 J2K converts class literals including redundant generic <*>
KT-31234 New J2K: Exception occurs on converting Java class to Kotlin
KT-31250 J2K: caret position of original file is preserved, adding spaces to resulting file
KT-31251 J2K: Java class with members is converted to Kotlin class with final constructor
KT-31252 J2K: resulted file is not formatted
KT-31254 J2K: resulted source uses full qualified references instead of imports
KT-31255 J2K: redundant modifiers in resulted source
KT-31726 New J2K converts annotation with array parameter to single value parameter
KT-31809 "Attempt to modify PSI for non-committed Document!" exception and broken kotlin file after new J2K conversion
KT-31821 J2K: IDEA Ultimate: local variable: CCE: "PsiLocalVariableImpl cannot be cast to class JvmAnnotatedElement" at JavaToJKTreeBuilder$DeclarationMapper.toJK()
KT-32436 NewJ2K generic field is not initialized after convertion
KT-19327 Java to Kotlin converter fails to convert code using Java 8 Stream API
KT-21467 Convert To Kotlin fails when using chained stream.flatmap methods
KT-24677 j2k creates nullable type for child function but keeps not null type for parent function
KT-32572 New J2K: Map with complex type as parameter is wrongly converted
KT-32602 J2K: no conversion of String.length() method call to property access of existing String property
KT-32604 kotlin.NotImplementedError exception occurs on converting Java call of toString method of data class to Kotlin
KT-32609 New J2K: Comparable class is wrongly converted to Kotlin if parameter of compareTo marked with @NotNull annotation
KT-32693 New J2K is throwing „Read access is allowed from event dispatch thread or inside read-action only“ on converting Java code inside Evaluate Expression window
KT-32702 New J2K: lambda with method reference is converted to lamdba with excessive parameter declaration
KT-32835 New J2K: NumberFormatException occurs on converting binary literals
KT-32837 J2K: NumberFormatException occurs on converting literals with underscore characters
KT-22412 J2K: Intention to replace if(...) throw IAE with require
KT-33371 Add an ability to switch between old and new J2K via settings window
KT-32863 New J2K: IllegalArgumentException occurs on Kotlin configuration in java project in Android Studio

Tools. JPS

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

Tools. REPL

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

Tools. Scripts

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

Tools. kapt

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

Kotlin Native

Related Kotlin Native changelog can be found separately.

Previous releases

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

Open source →

1.3.4019 Jun 2019Deprecated

`KT-29666` Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments

Content

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

CHANGELOG

1.3.40

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<Foo> 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

Previous releases

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

Open source →

org.jetbrains.kotlin:kotlin-gradle-plugin-model

Release timeline

Releases

Changelog

IDE

Tools. CLI

Checksums

1.4.31

Compiler

IDE. Gradle Integration

IDE. Gradle. Script

IDE. Multiplatform

IDE

Fixes

Checksums

CHANGELOG

Android

Backend. Native

Compiler

New Features

Performance Improvements

Fixes

IDE

New Features

Fixes

IDE. Android

IDE. Completion

IDE. Gradle. Script

IDE. Inspections and Intentions

New Features

Fixes

IDE. JS

IDE. Misc

IDE. Multiplatform

IDE. Run Configurations

IDE. Scratch

IDE. Script

JavaScript

Fixes

KMM Plugin

Libraries

Middle-end. IR

Native

Native. C and ObjC Import

Native. ObjC Export

Native. Platform libraries

Native. Platforms

Native. Runtime

Native. Stdlib

Reflection

Tools. CLI

Tools. CLI. Native

Tools. Compiler Plugins

Tools. Gradle

Tools. Gradle. JS

Tools. Gradle. Multiplatform

Tools. Gradle. Native

Tools. Incremental Compile

Tools. JPS

Tools. Parcelize

Tools. Scripts

Tools. kapt

Checksums

CHANGELOG

1.4.30-RC

Info about particular features

New Features

Fixes

IDE

New Features

Fixes

IDE. Android

IDE. Completion

IDE. Gradle. Script

IDE. Inspections and Intentions

New Features

IDE. Misc

IDE. Multiplatform

IDE. Run Configurations

IDE. Scratch