Update kotlin

[renovate]

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
com.google.devtools.ksp:symbol-processing-api (source)	2.3.3 → 2.3.10
org.jetbrains.kotlin:kotlin-gradle-plugin (source)	2.4.10 → 2.4.20-Beta2

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Release Notes

google/ksp (com.google.devtools.ksp:symbol-processing-api)

v2.3.10

Compare Source

What's Changed

• Fix OOMs caused by unstopped coroutine Dispatcher threads by moving KSP task cache to a gradle build service (#​2817)
• Sanitize ':' in internal-name module suffix so KSP works with Kotlin 2.4.0 default module names (#​2964)
• Filter source file trees in KspAATask to restore NO-SOURCE skipping behaviour (#​2947)
• Fix R-class resolution in KSP when AGP 9 built-in Kotlin is enabled (#​2857)
• Fix KSP2 incremental cache path normalization mismatch (#​2854)
• Normalize line endings for KspAATask source roots to prevent cross-platform remote build cache misses (#​2849)
• Fix bug where KSP incremental compilation does not consider library class references in annotations (#​3011)
• Consume all Kotlin sources in KSP to support other code generators (#​3001)
• Fix configuration cache invalidation in klib cross-compilation check (#​3014)
• Memoized hash code for KSTypeImpl to speed up processing (#​2896)
• Fix incorrect name generation for data classes annotated with @JvmRecord (#​2813)
• Include kotlinx.coroutines in the distributed uber jar symbol-processing-aa-embeddable (#​2938)
• New debugging features for incremental compilation, including additional logging and dependency graph visualization (#​3015)
• Deprecate the ksp(...) Gradle configuration in Kotlin Multiplatform (KMP) projects in favor of target-specific configurations (#​2956). Note: Non-KMP projects are also affected. For migration details, see the documentation.

Contributors

• Thanks to @​mvanhorn, @​Yong-yuan-X, @​MariusVolkhart, @​shmuelr and everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.9...2.3.10

v2.3.9

Compare Source

What's Changed

• Cleaned up native cross-compilation support checks to prevent Gradle Configuration Cache invalidation (#​2953)
• Fixed a compilation performance regression in in PsiResolutionStrategy introduced in 2.3.8 (#​2948)

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.8...2.3.9

v2.3.8

Compare Source

What's Changed

• Enabled new default annotation use-site rules in Kotlin's Analysis API (see KEEP 402) for more information. Note: KSP was already mostly compatible with KEEP 402, so there shouldn't be any visible changes for users. (#​2888)
• Enabled ksp.project.isolation by default when Gradle isolated projects are enabled (#​2866)
• Improved getSymbolsWithAnnotation performance by implementing a new PSI-based resolution strategy (#​2816)

Contributors

• Thanks to @​hugoncosta and everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.7...2.3.8

v2.3.7

Compare Source

What's Changed

• Bumped Kotlin target language version to 2.3 (#​2821)
• Fixed crash caused by upstream dependency (#​2856)
• Fixed support for Gradle Isolated Projects (#​2844)

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.6...2.3.7

v2.3.6

Compare Source

What's Changed

• Fixed an issue where module recompilation would fail on Windows environments when KSP2 was enabled (#​2774)
• Resolved an issue where generated Java sources were ignored when using Android Kotlin Multiplatform with IP-compatible paths (#​2744)
• Fixed a KSP version 2.3.5 CI error exception that does not break build checks (#​2763)
• Added symbol-processing-api and common-deps to compile dependencies (#​2789)
• Improved the detection of built-in Kotlin by removing the reliance on KotlinBaseApiPlugin (#​2772)
• A back-port of a performance optimization in the Intellij / Analysis API (2785 )
• Added support for nested typealias Kotlin language feature #​2588
• Exclude jdbc package from log4j to prevent vulnerability issue #​2651

Contributors

• Thanks to @​salmanmkc, @​jaschdoc, @​gurusai-voleti and everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.5...2.3.6

v2.3.5

Compare Source

What's Changed

• KSPCoreEnvironment.instance_prop leaks memory when used programmatically #​2742
• Missing first annotation argument when toByte is used #​2672
• Fix circular dependency between KSP and KAPT in AGP 9.0 #​2743

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.4...2.3.5

v2.3.4

Compare Source

What's Changed

• KSP ignores sources in Kotlin directory #​2730
• Avoid recording Java symbol lookups in non-incremental builds #​2728
• Clean up ThreadLocals when processing is done #​2709

Contributors

• Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.3...2.3.4

JetBrains/kotlin (org.jetbrains.kotlin:kotlin-gradle-plugin)

v2.4.20-Beta2: Kotlin 2.4.20-Beta2

Changelog

Analysis API

• KT-86546 Check suspicious when over ConeKotlinType in ConeTypeCompatibilityChecker
• KT-65417 K2 IDE: KTOR false positive expect-actual matching error on enum class because of implicit clone() in non-JVM source sets

Analysis API. FIR

• KT-69727 K2 IDE. Wrong error in the editor on calling clone function of actual enum instance in non-jvm platform
• KT-69726 FP errors on declaring fun clone() in actual enum in not-jvm source-set

Analysis API. Infrastructure

• KT-84914 Do not publish analysis-api-test-framework
• KT-86986 kotlin-compiler-common-for-ide bundles unrelated Analysis API modules

Analysis API. Light Classes

• KT-87301 SymbolLightAccessorMethod#isValid returns false for delegated properties
• KT-87171 SLC: non-mapped Kotlin collection supertype is dropped from supertype list
• KT-87250 JvmExposeBoxed: light classes shouldn't be autogenerated for private declarations

Analysis API. PSI

• KT-84925 Move KtReference to the Kotlin IntelliJ plugin

Analysis API. Standalone

• KT-61404 Analysis API: implement proper library publishing structure

Analysis API. Stubs and Decompilation

• KT-86250 KotlinIllegalArgumentExceptionWithAttachments: No fir element was found for KtDestructuringDeclaration on destructuring declaration typing
• KT-64901 Inconsistency between AST and Stub tree in the case of non-local destructuring declarations

Analysis API. Surface

Performance Improvements

• KT-70021 Analysis API: optimize KaFirExpressionTypeProvider.expressionType for simple cases

Fixes

• KT-87337 Integrate KaContextParameterOwnerSymbol into KaCallableSymbol
• KT-78234 Analysis API: Context parameters for accessors
• KT-86786 Investigate suspicious when over ConeKotlinType in ConeKotlinType.getDirectSupertypes
• KT-72902 Shouldn't KaSymbolProvider#findClass return KaNamedClassSymbol?
• KT-87237 No expected type inside arrayOf in annotation entries
• KT-87143 findKDoc returns parent property KDoc for accessors of an overriding property
• KT-83224 Support "Compile-time functions" in the Analysis API
• KT-87174 Expected class KaFirSymbol instead of class KaFirPackageSymbol exception
• KT-87199 [Analysis API] Remove KaEnumEntryInitializerSymbol
• KT-85206 Provide information about potentially removable context-sensitive resolution qualifiers via Analysis API
• KT-86872 KtOperationReferenceExpression should be KtResolvableCall
• KT-85800 Analysis API: The internal utility PrettyPrinter is used in the public API surface
• KT-73796 Consider "KaAnnotation#useSiteTarget" removal
• KT-84184 [Analysis API] Provide a unification substitutor API

Backend. Wasm

• KT-86242 K/Wasm: deprecate and prohibit using wasmExports
• KT-87639 [Wasm] Multimodule wasm fails on Pointer usages
• KT-86245 K/Wasm: provide an API to get a reference to wasm memory
• KT-76207 K/Wasm: prototype generating suspend functions with stack-switching proposal
• KT-73452 K/Wasm: turning on range checks by default
• KT-83159 K/Wasm: generate one common base class fun interfaces (including Function*)
• KT-83356 K/Wasm: Difference in behavior on nested class initialization (for enums?)
• KT-84267 K/Wasm: init order of companion objects is different from JVM
• KT-86192 K/Wasm: Raise a warning on usage of top-level require in JsFun
• KT-86822 K/Wasm: don't cast the result of calling callable references with Unit return type

Compiler

New Features

• KT-85925 Native: rework virtual trampolines machinery
• KT-80373 Add initial support for release compiler caches
• KT-86018 Short-form of name-based destructuring for multi-field value classes
• KT-86406 Swift Export: support supercalls for cross-language inheritance
• KT-77616 Native: consider adding an annotation that enforces thread state switching for a @SymbolName external fun`
• KT-86410 [KMP] Implement acceptance of JVM IC metadata from previous compilation

Performance Improvements

• KT-85621 Native: fix optimization in CastsOptimization

Fixes

• KT-86525 JvmExposeBoxed: Inconsistent number of parameters during reflection
• KT-87606 Compiler crash on red code with redeclaration of type parameter which is used as expression
• KT-87335 Context parameters: wrong LINENUMBER emitted for context argument loads in JVM bytecode
• KT-87245 Report UnsupportedFeature on ExplicitContextArgument
• KT-87577 Compiler crash on red code with ambiguous type parameter used as expression
• KT-72706 Confusing "INVISIBLE_REFERENCE" when calling private constructor
• KT-86957 Warning on the underscore variable is not reported for java.lang.Void call
• KT-87261 K/N debug: 'is' check miscompilation — local variable reports wrong type when two smart-cast extractions precede an inline loop
• KT-87507 False-positive ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED on fake-override with value parameter of type missing in dependencies
• KT-87439 Postpone UnitConversionsOnArbitraryExpressions indefinetely
• KT-87434 JAVA_CLASS_ON_COMPANION not reported when companion accessed through typealias
• KT-64622 [K/N] ar utility fails with symbol @ in module/klib name on Linux with static cache
• KT-84037 Native: rework ar invocations in the compiler
• KT-87339 JVM: Support recursive type provided as an argument of typeOf
• KT-86551 Check suspicious when over ConeKotlinType in FirExposedVisibilityDeclarationChecker#findVisibilityExposure
• KT-87395 StackOverflowError in return value checker when a Java class member is annotated with the class's own nested annotation
• KT-87290 Investigate possible bug in value class deserialization
• KT-61141 K/N: irText tests failed with K/N irText first run
• KT-85764 Native: Prohibit compiling sources in 'kotlin' package by default
• KT-86469 Check 'when's over 'ConeKotlinType' which could miss some branches in DFA
• KT-87253 Missed ConeCapturedType check in processing of equals contracts
• KT-84522 Refactor FirResolvedQualifier
• KT-84299 resolvedToCompanionObject is not set in some situations
• KT-87327 JVM IR: NullPointerException in JvmInlineClassLowering when using == between value of generic value class and another value class
• KT-86959 Native: OptimizeCasts gets confused by "complex" terms leaking between different loop iterations
• KT-86949 Native: ComputeTypesPass handles type checks across loop iterations wrong
• KT-86948 Native: CastsOptimization merges results of type checks across loop iterations wrong
• KT-86947 Native: CastsOptimization drops side effects of always-null safe casts
• KT-87276 Drop or move ConeTypeCompatibilityChecker
• KT-78623 No-arg constructor should be generated if all parameters are optional, even when one of the parameters is inline type
• KT-86886 Kotlin Lombok: compiler crash with IllegalArgumentException on builder with a single type parameter
• KT-83880 Consider making OPERATOR_RENAMED_ON_IMPORT a warning (instead of error)
• KT-87140 K/N: Test generation leaks BaseClassSuite's INSTANCE type parameter
• KT-87291 Enable ProhibitScriptTopLevelInnerClasses in 2.5
• KT-87226 CompanionBlocksAndExtensions: COMPANION_EXTENSION_RECEIVER_IS_OBJECT diagnostic is absent when object used via typealias
• KT-87058 Investigate abandoned language features
• KT-86655 mismatched mutability annotations in overriding lead to misaligned behavior in warn-mode and strict-mode
• KT-85169 Return value checker: RETURN_VALUE_NOT_USED: object expression highlighted entirely instead of just the keyword
• KT-87083 JVM: AssertionError in if UIntArray is declared in sources
• KT-87032 JvmExposeBoxed: forbid private @JvmExposeBoxed declarations
• KT-86523 JvmExposeBoxed: Cannot generate code for exposed constructor with default parameter referencing another default parameter
• KT-86865 Support abstract full value classes with non-trivial constructors
• KT-87016 Drop ANNOTATION_ON_ANNOTATION_ARGUMENT diagnostic
• KT-86615 K2: Missing INVALID_CHARACTERS diagnostic for enum entry name with illegal JVM characters, leading to runtime ClassFormatError
• KT-86849 Remove old @JvmInline multi-field value classes
• KT-87014 [KGP] failing testSwiftExportCoroutines
• KT-86481 Compilation failure with spread arrayOf inside arrayOf
• KT-86996 unwrapVarargValue does not consider some cases
• KT-86955 K2: Companion block funs in interfaces have OPEN modality after Fir2IR
• KT-87035 K2: Context parameter type leaks unsubstituted into callable-reference adapter
• KT-86940 Diagnostic range of NONE_APPLICABLE in enum entry is hard to see
• KT-86046 Put @K1Deprecation to all public declarations of K1 modules
• KT-86555 CL-based annotation resolve: clean up CFG-related hacks
• KT-86482 Collection literals: do not fallback if not supertype of List is expected
• KT-85288 Consider dropping use-site target checks in checkRepeatedAnnotation and similar places
• KT-85469 Native: potential concurrency problem with caches
• KT-86853 FIR: Char.code not being const-evaluated under IntrinsicConstEvaluation feature
• KT-86877 Postpone ELA-related language features
• KT-86852 Initialize full value classes fields before calling super
• KT-86824 Native: support spaces in paths for Linux
• KT-85816 Drop remaining usages of ComponentRegistrar
• KT-86042 Inference fixes lambda's return type variable too early
• KT-84719 Provide information for qualified types that might be replaced with context-sensitive simple names in IDE mode

Compose compiler

• b/522127447 Fixed a bug that was making the stability of pre-cast types be used in certain skipping checks instead of the stability of post-cast types

IR. Inlining

• KT-86558 Forbid accesing volatile references after inlining
• KT-87272 IR: Function value is inlined with out-of-scope type parameter
• KT-87274 IR: Synthetic accessors are generated with out of scope type parameters

IR. Tree

• KT-87138 IR: Rich callable reference to an inner-class member leaks outer class type parameters into the generated adapter
• KT-69305 Re-enable reporting out-of-scope type parameter usages during pre-lowering IR validation
• KT-87105 [Tests][IR] Unify or split IR dump for different backends
• KT-87292 IR: Drop lateinit modifier from IrFile.module property
• KT-73921 False negative: tailrec checkers with recursive functions (without tail recursion)
• KT-85575 KLIBs: Add IR text & ABI dump tests for companion blocks and companion extensions
• KT-86943 Investigate if lambdas must be transformed into static or regular functions
• KT-86884 IrTreeSymbolVisitor is not visiting symbols declared in non-final class
• KT-85147 K/N: Segfault when calling SAM instance converted to type with nullable type parameter upper bound

JVM. Reflection

• KT-73657 Fix kotlin-reflect performance issues for reflection operations common for both reflection implementation: stdlib and kotlin-reflect
• KT-86101 Reflection: additional Java constructors are not added for mapped builtins in the new implementation

JavaScript

Fixes

• KT-86934 K/JS: Stack overflow when implementing interface with suspend fun using anonymous object
• KT-80188 Design exporting of suspend lambdas into JS/TS
• KT-87127 KJS: @JsPlainObject factory contains duplicated parameters
• KT-70622 Kotlin/JS: Incremental compilation doesn't recompile kotlin js stdlib while changing a collection
• KT-87307 [JS] Reflection: runtime KClass of a Long value differs from Long::class
• KT-87410 [K/JS] Companion block initialization order of super types differs from JVM
• KT-86273 @JsExport.Ignore does not work properly with data classes properties
• KT-84992 Remove body of isLongCompiledToBigInt intrinsic after boostrap version updated
• KT-40768 KJS: initialization order for companion objects (inherited classes) different from K/JVM
• KT-87074 KJS: Fix inheritance issues in Analysis API-based TypeScript export
• KT-75176 Add infrastructure for bundle size testing
• KT-70223 Delete the source code for the legacy JS backend
• KT-73067 Drop support for the legacy JS metadata from the metadata decompiler
• KT-82224 Respect file-level annotations in Analysis API-based TypeScript export
• KT-82340 Implement supertype approximation in Analysis API-based TypeScript Export
• KT-82317 Support Kotlin collections in Analysis API-based TypeScript Export

Klibs

Fixes

• KT-87294 [Wasm] Implement Wasi Klib backward compatibility testing
• KT-86320 [PL] Replacing unusable classifiers with Any? type may cause a signature clash
• KT-86632 KLIBs: Rework serialization logic for IrTypeAlias
• KT-87006 Extract/remove K1-specific parts from :kotlin-util-klib-metadata
• KT-81659 Load symbols on 2nd compilation stage without frontend involvement
• KT-85611 Change usage of KlibCompilerDeserializationConfiguration in IntelliJ to CommonCompilerDeserializationConfiguration
• KT-86451 Get rid of deprecated '-no-endorsed-libs' usages in Kotlin project
• KT-85578 KLIBs: New manifest property to indicate "new initialization order"
• KT-74417 Deduce the metadata version based on LV in KLIB-based backends
• KT-85587 [Tests] Update test data so it ignores failing compatibility tests correctly
• KT-71414 KotlinLibraryResolver.resolveWithDependencies was evolved in binary incompatible way

Language Design

• KT-11914 Confusing data class copy with private constructor
• KT-86761 DM 2026-06-08: Another round on ELA (2)
• KT-86895 Make full value classes poison builds

Libraries

• KT-30270 Provide allDistinct() and allDistinctBy{} for iterables
• KT-86766 Add @EqualityBound declaration to stdlib
• KT-87173 isSortedBy and isSortedByDescending inline their selector twice at every call site
• KT-87166 allEqualBy inlines its selector twice at every call site
• KT-31305 Support JUnit5-like assertions with message suppliers in kotlin-test
• KT-86329 Update kotlinx.collections.immutable in Kotlin project to 0.5.0
• KT-85020 Path.copyToRecursively silently corrupts directory structure when copying across file systems with different path separators
• KT-57883 Description and code mismatch in CoroutineContextImpl.kt
• KT-65526 Rewrite builtins as expect-actual

Native

• KT-36076 KotlinNullPointerException: Gradle parallel compilation fails on 1.3.70

Native. Build Infrastructure

• KT-86889 Kotlin/Native: restore benchmarks after bootstrap update

Native. C and ObjC Import

• KT-33092 Kotlin/Native doesn't mangle names clashing with standard macros when generating Objective-C headers
• KT-87461 Native: platform.darwin cache build failure with symbol is already bound
• KT-83940 Generate IR from C-interop KLIBs without descriptors
• KT-84665 Don't use KLIB resolver in the CInterop tool
• KT-86263 Generate IR for forward-declared classes without descriptors
• KT-86871 C-interop Klib caches are not deterministic after KT-83940

Native. ObjC Export

• KT-86443 Native: crash in SwitchThreadState when KotlinBase methods are called from a thread without an initialized Kotlin runtime
• KT-85423 Native: ObjC export throws and breaks IDE highlighting and navigation support due to mangling inconsistency

Native. Runtime. Memory

• KT-86432 Native: PMCS GC bug - alive object seems to be freed prematurely

Native. Swift Export

New Features

• KT-87503 Swift Export: Support properties in cross-language inheritance
• KT-87068 Swift Export: default interface method implementations
• KT-86890 Swift Export: Support async calls in cross-language subtyping
• KT-80000 Swift Export: Sealed Classes

Fixes

• KT-86509 [Swift Export] Probable race in tests
• KT-87340 [Swift Export] runtime crash during existential creation
• KT-87462 [Swift Export] variadic params in functions requiring reverse bridges generates incomparable code
• KT-87221 [Swift Export] abstract class with inherited interface fails to compile
• KT-87229 [Swift Export] OptIn property inside interface fails to compile
• KT-86463 Swift Export: nested sealed interface in kotlinx-datetime (DateTimeFormatBuilder.WithDate) is referenced but never emitted, causing Swift compile error
• KT-87088 Protocols that came from cinterop should lose the Protocol suffix
• KT-87150 [Swift Export] member function with param named result fails to compile
• KT-87144 [Swift Export] nullable closure in member function fails to compile
• KT-87106 [Swift Export] suspend closure with context parameter fails to compile
• KT-86780 Native: Swift Export coroutines tests are flaky on the CI
• KT-87022 [Swift Export] Optional Range results in incompilable code

Tools. BCV

• KT-85950 Add support of "com.android.kotlin.multiplatform.library" plugin [ABI validation]

Tools. Build Tools API

New Features

• KT-78224 BTA: implement support for metadata compilations
• KT-86702 [BTA] Drop JVM classpath metadata arguments
• KT-86676 Add Gradle property to control KMP JVM metadata usage in incremental compilation
• KT-85663 Make BTA JS Compiler Arguments Type-Safe
• KT-66425 BTA: implement ClasspathEntrySnapshot.hashCode
• KT-84598 [BTA] Expose API Version via Public Property

Fixes

• KT-87370 JS/Wasm history IC fails when compiler plugin generates callables
• KT-87034 Introduce SerializedFirMetadata to track source file per metadata fragment
• KT-87110 Name KLIB metadata fragments after source files for incremental writes
• KT-87248 [KMP/JVM] Merge common metadata module header across incremental compilations
• KT-87040 Track source-file-to-metadata-fragment mapping when writing KLIB metadata
• KT-86703 Support JVM classpath metadata for KMP incremental compilation
• KT-87152 Decouple JVM IC-specific metadata writing logic from common metadata components
• KT-86876 Migrate WasmBinaryTransform to BTA
• KT-86916 [BTA] adopt availableSinceVersion for WASM option holders
• KT-82986 BTA: setting unknown options may pass silently
• KT-85736 BTA tests: automate detection of missing versions in compatibilityTestsVersions

Tools. CLI

• KT-86473 Report usages of removed CLI arguments as warnings
• KT-86314 Add a CLI flag which controls ELA status
• KT-86284 Deprecate using PSI mode from compiler CLI
• KT-86405 Generalize reporting of deprecated CLI arguments
• KT-87057 Return a legacy JVM KMP IC implementation until the proper one is implemented
• KT-85003 Fix name check for @JvmName and @JvmExposeBoxed

Tools. CLI. Native

• KT-87123 Phased klib compiler does not read -native-library arguments

Tools. Compiler Plugin API

• KT-86860 Generalize generateProperties to support FirVariableSymbol but not only FirPropertySymbol

Tools. Compiler Plugins

• KT-86842 Lombok: introduce ARGUMENT_IS_NOT_SUPPORTED diagnostic
• KT-86145 Support for @EqualsAndHashCode annotation on kotlin classes
• KT-87137 Lombok: builder methods aren't resolved if use an existing builder and generics
• KT-87044 [DataFrame] Plugin generates a spurious backing field for generated column accessors
• KT-87153 Lombok: merge module common into k2
• KT-86980 Delete sources of K1 parts of compiler plugins
• KT-87053 Lombok: @NoArgsConstructor factory references an out-of-scope type parameter of a generic class
• KT-86839 Handle @Log on Java classes
• KT-86985 Can't use @JvmName on class member properties of JPA entities even when using the 'final' modifier
• KT-86774 PowerAssert: allow changing the last parameter to a different type if not specified

Tools. Compiler plugins. Compose

• KT-87326 Compose compiler plugin: NoClassDefFoundError / IrLinkageError at runtime when calling @Composable interface method with default parameter across modules

Tools. Compiler plugins. Serialization

• KT-86224 Serialization plugin generates IR with out-of-scope type parameters

Tools. Gradle

New Features

• KT-87481 Introduce DelicateKotlinGradlePluginApi Opt-In
• KT-85709 Write Kotlin Daemon warnings and Errors to Problems API

Fixes

• KT-87509 Stop using Gradle Problems API severity field
• KT-87508 Wire buildNeeded/buildDependent only for Gradle <9.5.0
• KT-78294 Applying kotlin-dsl in buildSrc with org.jetbrains.kotlin.ecosystem in settings.gradle.kts causes sync failure
• KT-86435 Replace File.ensureParentDirsCreated() with NIO Path createDirectories()
• KT-87241 CleanDataTask.exec() deprecation message unreachable - task fails with cryptic UninitializedPropertyAccessException instead
• KT-86039 Compile against Gradle 9.6.0 API
• KT-87187 Bump Apple deployment targets to match Xcode 27
• KT-86515 Replace mavenLocal() with build-dir repo in KGP functional tests
• KT-76515 IC misses dependency to recompile when named kt file with JvmField instructed property was replaced with an object with the same name
• KT-87186 Fix failing testSwiftExportCoroutines
• KT-87160 Fix failing Swift Export testExportingTransitiveDependencies test
• KT-86827 [KGP] Add KgpJson helper and bump kotlinx-serialization-json 1.4.0→1.4.1
• KT-55452 Values of the compiler arguments set via KotlinCompile task configuration are duplicated by the KaptGenerateStubs task
• KT-57653 Explicit API mode is not enabled when free compiler arguments are specified in Gradle project

Tools. Gradle. JS

New Features

• KT-86715 Add ability to configure Dev-server URL (or specification) to run browser tests from
• KT-87483 Mark parts of JS Test DSL with DelicateAPI
• KT-87484 Update Browser JS Test DSL after DM for 2.4.20-Beta2

Fixes

• KT-86911 Configured post-processing for playwright reports missing an input or output annotation
• KT-87501 Throw an error if new JS test DSL is used with Wasm
• KT-84724 NPM dependency versions do not invalidate KotlinWebpack task cache key in kotlin multiplatform project
• KT-87600 Playwright install on multiple subprojects cause Gradle build to fail
• KT-87647 Upgrade tooling NPM dependencies versions for 2.4.20
• KT-87023 Add ability to change / set path to custom browser executable
• KT-86958 Unclear error for js test failure on timeout
• KT-86922 Correct browserDefaults timeout

Tools. Gradle. Multiplatform

• KT-82398 KMP Separate Compilation: missing fragment dependencies to commonized cinterop

Tools. Gradle. Native

• KT-85468 Don't fail IDE import if the SwiftPM import pipeline has failed somewhere
• KT-84852 Wire linkage package integration check with Swift Export's embedAndSign
• KT-87196 Ld override falls apart in Xcode 27
• KT-86155 Print what changed in the linkage package
• KT-84223 Move local SwiftPM package IO validation and name inference from configuration time to execution time
• KT-86995 Cocoapods plugin: pass all frameworks to the compiler
• KT-86667 Switch off sandboxing in integrateEmbedAndSign

Tools. Gradle. Wasm

• KT-86633 K/Wasm: Introduce wasmtime support as a runtime for wasm-wasi target in KGP
• KT-87258 K/Wasm: Introduce a way to use multimodule compilation only for development
• KT-86919 K/Wasm: Allow to configure wasm compilation mode
• KT-86878 K/Wasm: Update wasmtime to 46.0.0
• KT-86673 K/Wasm: update binaryen to 130
• KT-82419 wasm failed to compile on windows arm64

Tools. Gradle. Xcode

• KT-86858 Eager SwiftPM check in XCFramework task crashes if Kotlin extension is not yet registered

Tools. Incremental Compile

• KT-87217 JS/Wasm IC: "Could not close incremental caches" with "Storage is already registered"
• KT-86781 Deprecate FIR based incremental runner
• KT-85241 IC: star-import conflicts are not re-evaluated after adding new declarations, leading to missed ambiguity errors
• KT-60584 IC does not propagate RequiresOptIn level change effect transitively

Tools. Kapt

• KT-86550 Kapt: properties with context parameters are translated incorrectly

Tools. Maven

• KT-83374 CRI: it is not clear that CRI generation requires IC being enabled in Maven

Tools. Scripts

• KT-87041 Scripting: classpath extraction fails to extract stdlib from kotlinc
• KT-87331 Scripting: compiling scripts with kotlinc doesn't update the compilation config after refinement
• KT-87042 Scripting cache test fails on the kotlin runner

Tools. Wasm

• KT-86407 Get rid of '-Xwasm' usages in Kotlin project

v2.4.20-Beta1: Kotlin 2.4.20-Beta1

Changelog

Analysis API

• KT-85418 Implement an API for accessing deserialized file annotations in Analysis API
• KT-74448 K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt, kotlinx.coroutines
• KT-85856 containingSymbol of constructor property differs for local and non-local classes

Analysis API. Code Compilation

• KT-76457 K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a JVM counterpart” on evaluating inline fun from common module inside jvm

Analysis API. FIR

• KT-70552 No expects for actual
• KT-86014 Types are broken after remove parameter through change signature
• KT-86363 KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier found on companion blocks
• KT-86147 Drop kotlin.parallel.resolve.under.global.lock registry key
• KT-85543 Avoid lazy resolve for the contracts phase if no constracts might be resolved

Analysis API. Infrastructure

• KT-86186 Analysis API: Codebase tests run twice in some analysis modules — pick a single JUnit runner and migrate
• KT-85360 Drop kotlin-compiler-testdata-for-ide artifact
• KT-85585 Simplify the dependencies graph for the Analysis API modules
• KT-85381 Remove tests for the FE10 implementation

Analysis API. Light Classes

New Features

• KT-84645 Support resolving to companion block members & extensions from Java (light classes)
• KT-80775 Support PsiClass#getRecordComponents in light classes

Fixes

• KT-57537 SLC: propagate default parameter value from (@JvmOverloads) expect declarations to actual declarations
• KT-63568 Symbol Light Classes: KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work incorrectly when psi is not set
• KT-70428 AA: good code is red when a Java class extends a Kotlin class implementing MutableList by delegation
• KT-36740 MPP: False-positive incompatible types in .java when using expect-class returned by non-expect member from common when actual is actual typealias
• KT-67749 Analysis API: Symbol Light classes should be available only to pure JVM sources
• KT-85040 [Analysis API] Improve Java / Kotlin interop in KMP projects
• KT-68169 K2 IDE. KMP. False positive type mismatch in java file of jvm source-set when using common declaration which expects String
• KT-37783 KMP Java Interop: JVM-only methods on actual superclass not resolved in Java for common subclass
• KT-40059 Provide type correction for expect/actual types used from Java-code
• KT-71429 MPP: False positive "Function1 is not a functional interface" when calling code from Common in Java
• KT-70426 SLC: kotlin.Collection#size is not exposed by default
• KT-60480 Symbol Light Classes: Classes implementing kotlin.collections.* interfaces don't implement all methods from the corresponding java.util.* interfaces
• KT-36991 IDE: "both methods have same erasure" for Java classes directly or indirectly extending Kotlin collections
• KT-22594 KotlinCollection.getSize is not highlighted as an error in Java

Analysis API. PSI

• KT-85052 Move mutation methods out of the Kotlin PSI
• KT-84925 Move KtReference to the Kotlin IntelliJ plugin
• KT-85427 Use factory-like pattern instead of reflection in KtNodeType
• KT-84789 Ensure all KtClassBody.parent usages are correct
• KT-85154 PSI: "AE: parent is ERROR_ELEMENT" with top-level destructuring declaration

Analysis API. Providers and Caches

• KT-82220 Analysis API: Support platform-specific session components and checkers in metadata sessions
• KT-82731 Analysis API: Limit granular tree change processing to a few files

Analysis API. Standalone

• KT-85112 AA does not see packages from unpacked klibs
• KT-86417 Support parameters in 'getExpectsForActual()'
• KT-84916 Metadata stub deserializers aren't properly set up for Analysis API Standalone
• KT-83191 Analysis API: JvmDependenciesIndexImpl performs very poorly for large classpaths

Analysis API. Stubs and Decompilation

• KT-86520 KotlinDeclarationInCompiledFileSearcher doesn't support visibility-mangled declarations
• KT-64901 Inconsistency between AST and Stub tree in the case of non-local destructuring declarations
• KT-84444 Support stubs for companion blocks & extensions

Analysis API. Surface

New Features

• KT-73214 Add KaScope#declarations with name filter
• KT-69085 Provide API to retrieve label/name from KtFunctionLikeSymbol
• KT-70771 KaLocalVariableSymbol: support isDelegatedProperty
• KT-85239 Streaming version of collectDiagnostics()
• KT-85037 Add API for KaFunctionType's returnType modification
• KT-80460 AA: Introduce KtExpression.isStableForSmartCasting API
• KT-82519 Automatically recognize the appropriate analysis mode for in-memory file copies based on their content
• KT-65912 Analysis API: Implement type building API for all KtType

Fixes

• KT-66039 K2: Analysis API: redesign resolution API
• KT-70794 K2 IDE: Reference to object does not resolve as LHS in "plusAssign" assignment expression
• KT-70774 Unary operators on literals are not resolvable
• KT-86757 Flaky annotations result for @all annotation on a backing field
• KT-85382 Remove the FE10 implementation
• KT-86681 [Analysis API] Move isDelegated to KaVariableSymbol
• KT-86685 collectCallCandidates works incorrectly for a constructor vs. a companion inv

✂ Note

PR body was truncated to here.

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