Update kotlin

[renovate]

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
org.jetbrains.kotlinx:kotlinx-coroutines-play-services	1.7.1 → 1.10.2
org.jetbrains.kotlinx:kotlinx-datetime	0.7.1 → 0.7.1-0.6.x-compat
org.jetbrains.kotlinx:kotlinx-serialization-core	1.9.0 → 1.10.0
com.google.devtools.ksp (source)	2.2.0-2.0.2 → 2.3.6
org.jetbrains.kotlin.plugin.compose (source)	2.2.0 → 2.3.20
org.jetbrains.kotlin.plugin.serialization (source)	2.2.0 → 2.3.20
org.jetbrains.kotlin.multiplatform (source)	2.2.0 → 2.3.20

---

Release Notes

Kotlin/kotlinx.coroutines (org.jetbrains.kotlinx:kotlinx-coroutines-play-services)

v1.10.2

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• Fixed the kotlinx-coroutines-debug JAR file including the module-info.class file twice, resulting in failures in various tooling (#​4314). Thanks, @​RyuNen344!
• Fixed Flow.stateIn hanging when the scope is cancelled in advance or the flow is empty (#​4322). Thanks, @​francescotescari!
• Improved handling of dispatcher failures in .limitedParallelism (#​4330) and during flow collection (#​4272).
• Fixed runBlocking failing to run its coroutine to completion in some cases if its JVM thread got interrupted (#​4399).
• Small tweaks, fixes, and documentation improvements.

v1.10.1

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• Fixed binary incompatibility introduced for non-JVM targets in #​4261 (#​4309).

v1.10.0

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• Kotlin was updated to 2.1.0 (#​4284).
• Introduced Flow.any, Flow.all, and Flow.none (#​4212). Thanks, @​CLOVIS-AI!
• Reorganized kotlinx-coroutines-debug and kotlinx-coroutines-core code to avoid a split package between the two artifacts (#​4247). Note that directly referencing kotlinx.coroutines.debug.AgentPremain must now be replaced with kotlinx.coroutines.debug.internal.AgentPremain. Thanks, @​sellmair!
• No longer shade byte-buddy in kotlinx-coroutines-debug, reducing the artifact size and simplifying the build configuration of client code. Thanks, @​sellmair!
• Fixed NullPointerException when using Java-deserialized kotlinx-coroutines-core exceptions (#​4291). Thanks, @​AlexRiedler!
• Properly report exceptions thrown by CoroutineDispatcher.dispatch instead of raising internal errors (#​4091). Thanks, @​zuevmaxim!
• Fixed a bug that delayed scheduling of a Dispatchers.Default or Dispatchers.IO task after a yield() in rare scenarios (#​4248).
• Fixed a bug that prevented the main() coroutine on Wasm/WASI from executing after a delay() call in some scenarios (#​4239).
• Fixed scheduling of runBlocking tasks on Kotlin/Native that arrive after the runBlocking block was exited (#​4245).
• Fixed some terminal Flow operators sometimes resuming without taking cancellation into account (#​4254). Thanks, @​jxdabc!
• Fixed a bug on the JVM that caused coroutine-bound ThreadLocal values not to get cleaned when using non-CoroutineDispatcher continuation interceptors (#​4296).
• Small tweaks, fixes, and documentation improvements.

v1.9.0

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Features

• Wasm/WASI target support (#​4064). Thanks, @​igoriakovlev!
• limitedParallelism now optionally accepts the name of the dispatcher view for easier debugging (#​4023).
• No longer initialize Dispatchers.IO on the JVM when other standard dispatchers are accessed (#​4166). Thanks, @​metalhead8816!
• Introduced the Flow<T>.chunked(size: Int): Flow<List<T>> operator that groups emitted values into groups of the given size (#​1290).
• Closeable dispatchers are instances of AutoCloseable now (#​4123).

Fixes

• Calling hasNext on a Channel's iterator is idempotent (#​4065). Thanks, @​gitpaxultek!
• CoroutineScope() created without an explicit dispatcher uses Dispatchers.Default on Native (#​4074). Thanks, @​whyoleg!
• Fixed a bug that prevented non-Android Dispatchers.Main from initializing when the Firebase dependency is used (#​3914).
• Ensured a more intuitive ordering of tasks in runBlocking (#​4134).
• Forbid casting a Mutex to Semaphore (#​4176).
• Worked around a stack overflow that may occur when calling asDeferred on a Future many times (#​4156).

Deprecations and promotions

• Advanced the deprecation levels for BroadcastChannel-based API (#​4197).
• Advanced the deprecation levels for the old kotlinx-coroutines-test API (#​4198).
• Deprecated Job.cancelFutureOnCompletion (#​4173).
• Promoted CoroutineDispatcher.limitedParallelism to stable (#​3864).
• Promoted CoroutineStart.ATOMIC from ExperimentalCoroutinesApi to DelicateCoroutinesApi (#​4169).
• Promoted CancellableContinuation.resume with an onCancellation lambda to stable, providing extra arguments to the lambda (#​4088).
• Marked the classes and interfaces that are not supposed to be inherited from with the new InternalForInheritanceCoroutinesApi opt-in (#​3770).
• Marked the classes and interfaces inheriting from which is not stable with the new ExperimentalForInheritanceCoroutinesApi opt-in (#​3770).

Other

• Kotlin was updated to 2.0 (#​4137).
• Reworked the documentation for CoroutineStart and Channel-based API (#​4147, #​4148, #​4167). Thanks, @​globsterg!
• Simplified the internal implementation of Job (#​4053).
• Small tweaks, fixes, and documentation improvements.

v1.8.1

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• Remove the @ExperimentalTime annotation from usages of TimeSource (#​4046). Thanks, @​hfhbd!
• Introduce a workaround for an Android bug that caused an occasional NullPointerException when setting the StateFlow value on old Android devices (#​3820).
• No longer use kotlin.random.Random as part of Dispatchers.Default and Dispatchers.IO initialization (#​4051).
• Flow.timeout throws the exception with which the channel was closed (#​4071).
• Small tweaks and documentation fixes.

Changelog relative to version 1.8.1-Beta

• Flow.timeout throws the exception with which the channel was closed (#​4071).
• Small documentation fixes.

v1.8.0

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• Implement the library for the Web Assembly (Wasm) for JavaScript (#​3713). Thanks @​igoriakovlev!
• Major Kotlin version update: was 1.8.20, became 1.9.21.
• On Android, ensure that Dispatchers.Main != Dispatchers.Main.immediate (#​3545, #​3963).
• Fixed a bug that caused Flow operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream (#​4035, #​4038)
• kotlinx-coroutines-debug is published with the correct Java 9 module info (#​3944).
• kotlinx-coroutines-debug no longer requires manually setting DebugProbes.enableCoroutineCreationStackTraces to false, it's the default (#​3783).
• kotlinx-coroutines-test: set the default timeout of runTest to 60 seconds, added the ability to configure it on the JVM with the kotlinx.coroutines.test.default_timeout=10s (#​3800).
• kotlinx-coroutines-test: fixed a bug that could lead to not all uncaught exceptions being reported after some tests failed (#​3800).
• delay(Duration) rounds nanoseconds up to whole milliseconds and not down (#​3920). Thanks @​kevincianfarini!
• Dispatchers.Default and the default thread for background work are guaranteed to use the same context classloader as the object containing it them (#​3832).
• It is guaranteed that by the time SharedFlow.collect suspends for the first time, it's registered as a subscriber for that SharedFlow (#​3885). Before, it was also true, but not documented.
• Atomicfu version is updated to 0.23.1, and Kotlin/Native atomic transformations are enabled, reducing the footprint of coroutine-heavy code (#​3954).
• Added a workaround for miscompilation of withLock on JS (#​3881). Thanks @​CLOVIS-AI!
• Small tweaks and documentation fixes.

Changelog relative to version 1.8.0-RC2

• kotlinx-coroutines-debug no longer requires manually setting DebugProbes.enableCoroutineCreationStackTraces to false, it's the default (#​3783).
• Fixed a bug that caused Flow operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream (#​4035, #​4038)
• Small documentation fixes.

v1.7.3

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• Disabled the publication of the multiplatform library metadata for the old (1.6 and earlier) KMP Gradle plugin (#​3809).
• Fixed a bug introduced in 1.7.2 that disabled the coroutine debugger in IDEA (#​3822).

v1.7.2

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Bug fixes and improvements

• Coroutines debugger no longer keeps track of coroutines with empty coroutine context (#​3782).
• CopyableThreadContextElement now properly copies an element when crossing the coroutine boundary in flowOn (#​3787). Thanks @​wanyingd1996!
• Coroutine timeouts no longer prevent K/N newSingleThreadContext from closing (#​3768).
• A non-linearizability in Mutex during tryLock/unlock sequence with owners is fixed (#​3745).
• Atomicfu version is updated to 0.21.0.

Kotlin/kotlinx.serialization (org.jetbrains.kotlinx:kotlinx-serialization-core)

v1.10.0

==================

This release is based on Kotlin 2.3.0 and contains all of the changes from 1.10.0-RC.
The only additional change is a fix for ProtoBuf packing of Kotlin unsigned types (#​3079).
Big thanks to KosmX for contributing the fix.

For your convenience, the changelog for 1.10.0-RC is duplicated below:

Stabilization of APIs

kotlinx-serialization 1.10 and subsequent releases will be focused on stabilization of existing APIs.
The following APIs and configuration options are no longer experimental because they're widely used without any known major issues:

• Json configuration options: decodeEnumsCaseInsensitive, allowTrailingComma, allowComments, and prettyPrintIndent. (#​3100)
• @EncodeDefault annotation and its modes. (#​3106)
• JsonUnquotedLiteral constructor function (#​2900)
• JsonPrimitive constructor function overloads that accept unsigned types. (#​3117)
• JSON DSL functions on JsonElement with Nothing? overloads. (#​3117)

Readiness for return value checker

Kotlin 2.3.0 introduces a new feature aimed
at helping you to catch bugs related to the accidentally ignored return value of the function.
kotlinx-serialization 1.10.0-RC code is fully marked for this feature, meaning that you
can get warnings for unused function calls like Json.encodeToString(...).
To get the warnings, the feature has to be enabled in your project as described here.

Polymorphism improvements

Polymorphic serialization received a couple of improvements in this release:

New subclassesOfSealed utility to automatically register sealed subclasses serializers in polymorphic modules (#​2201).
Use it in your SerializersModule when configuring a polymorphic hierarchy which contains both abstract and sealed classes.
For example, when root of your hierarchy is an interface, but most of your inheritors are sealed classes.
The new function will register all known sealed subclasses for you, so you don’t need to list them one by one.
This makes writing your SerializerModules much faster and simpler.
Big thanks to Paul de Vrieze for contributing this feature.

Class discriminator conflict check rework (#​3105).
If a payload already contains a property with the same name as the configured discriminator (for example, type),
it is called a class discriminator conflict.
To produce a correct output and allow more inputs to be deserialized at the same time, the following changes were made:

• Conflicts introduced by JsonNamingStrategy transformations are now detected during serialization as well and will cause SerializationException.
  It also affects non-polymorphic classes.
• Conflicts from ClassDisciminatorMode.ALL_JSON_OBJECTS and SerializersModuleBuilder.polymorphicDefaultSerializer are also detected.
• It is allowed to deserialize such a conflicting key for both sealed and open polymorphic hierarchies.
  Previously, it was possible in the sealed hierarchies alone due to missing assertion. See #​1664 for details.

General improvements

• Add .serialName to MissingFieldException for clearer diagnostics. (#​3114)
• Generate unique Automatic-Module-Name entries for metadata JARs. (#​3109)
• Revised ProGuard rules and added R8 tests. (#​3041)
• CBOR: Improved error message when a byte string/array type mismatch is encountered. (#​3052)

Bugfixes

• Fix the type in the BIGNUM_NEGATIVE tag name. (#​3090)
• CBOR: Fix various bugs in the decoder implementation to be more strict and consistent with the specification.

google/ksp (com.google.devtools.ksp)

v2.3.6

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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

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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

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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

v2.3.3

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What's Changed

• Migrate away from a deprecated compilerOptions KGP API #​2703

Contributors

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

Full Changelog: google/ksp@2.3.2...2.3.3

v2.3.2

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What's Changed

Note: This release is a hotfix for a regression introduced in 2.3.1

• Fixed an issue where KSP incorrectly processed specific nullable annotations from Java interfaces, leading to incorrect nullability in the generated Kotlin code #​2696
• Fixed a regression introduced in #​2656 that caused runtime failures for projects using AGP 8.8.0 and older due to an incompatible, version-specific type check. #​2694

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.3.1...2.3.2

v2.3.1

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What's Changed

• Added support for AGP 9.0 and built-in Kotlin #​2674
• Fixed a bug in getJvmCheckedException that incorrectly handled nested classes. #​2584
• Removed incorrect caching for KSValueArgumentLiteImpl that wrongly merged arguments with different parents, origins, or locations #​2677

Contributors

Thanks to everyone who reported bugs and participated in discussions!
Full Changelog: google/ksp@2.3.0...2.3.1

v2.3.0

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What's Changed

• KSP1 has been deprecated #​2657
• KSP version is no longer tied to the Kotlin compiler version (moving away from the old - format). #​2658
• KSP is no longer a compiler plugin (like KSP1). It now operates as a more standalone tool built on stable compiler APIs (shared with tools like IntelliJ).
• KSP now has fewer limitations on the Kotlin version in use and allows the KSP team to provide better compatibility to KGP/AGP/Gradle
• Read more about KSP2: https://github.com/google/ksp/blob/main/docs/ksp2.md

Reason for 2.3.0 version name:

• It is independent of Kotlin now
• We wanted to match the Kotlin language version
• It is newer than the latest KSP 2.2.20-2.0.4 release.

Full Changelog: google/ksp@2.2.20-2.0.4...2.3.0

v2.2.21-2.0.5

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What's Changed

• A new Gradle property flag was added to mute the warnings about KSP1 usage. You can enable this by setting warn.on.ksp1.usage=false in your gradle.properties file.

Full Changelog: google/ksp@2.2.21-2.0.4...2.2.21-2.0.5

v2.2.21-2.0.4

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What's Changed

• Kotlin version: 2.2.21 by @​mkmuir0 in #​2671

Full Changelog: google/ksp@2.2.21-RC2-2.0.4...2.2.21-2.0.4

v2.2.20-2.0.4

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What's Changed

• Unable to build on AGP 8.11.1 using KSP 2.2.20-2.0.3 due to class cast exception #​2614

• Resolver#getJvmCheckedException(KSPropertyAccessor) throws IllegalArgumentException #​2548

• ClassCastException when building with 2.2.20-2.0.3 #​2598

• Replace KaFirStopWorldCacheCleaner with no-op implementation #​2626

• BuildConfig values are not available during annotation process after upgrading ksp from 2.2.10-2.0.2 -> 2.2.20-2.0.3 #​2597

• Missing Gradle task wiring with 2.2.20-2.0.3 #​2595

• 2.2.20-2.0.3 + protobufJavalite build errors #​2596

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.2.20-2.0.3...2.2.20-2.0.4

v2.2.20-2.0.3

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What's Changed

• Removed usages of deprecated KGP ApiVersion - #​2400
• Android integration for KSP has moved on to the new Variant API - #​2250
• Runtime warning was added for projects that opt out of KSP2 - #​2538
• AGP version against which KSP is compiled has been upgraded - #​2552

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.1.21-2.0.2...2.2.20-2.0.3

v2.2.20-2.0.2

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What's Changed

• Kotlin version: 2.2.20 by @​mkmuir0 in #​2590

Full Changelog: google/ksp@2.2.20-RC2-2.0.2...2.2.20-2.0.2

v2.2.10-2.0.2

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What's Changed

• Kotlin version: 2.2.10 by @​mkmuir0 in #​2555

Full Changelog: google/ksp@2.2.10-RC2-2.0.2...2.2.10-2.0.2

JetBrains/kotlin (org.jetbrains.kotlin.plugin.compose)

v2.3.20: Kotlin 2.3.20

Changelog

Analysis API. FIR

New Features

• KT-78090 Implement stubs support for new conditional returns and holdsIn contracts

Fixes

• KT-82948 'FirRegularClass' expected as a containing declaration, got 'FirTypeAliasImpl'
• KT-83467 Package-level JSpecify annotations are ignored when coming from jars or libraries
• KT-82057 K2. Cannot infer type parameter 'R' in Ktor routing post() function with explicit response type
• KT-82846 AA: unresolved KtExpression.expressionType for the reference to the parameter with default value
• KT-80485 False positive UNRESOLVED_REFERENCE on nested interface from super-super class in the super type position inside an anonymous object
• KT-82772 Flaky false positive deprecation warning on PersistentMap.put in Kotlin repo in IDE mode
• KT-76487 StdLibSourcesLazyDeclarationResolveTestGenerated.testWrappedInt is unstable
• KT-82618 Various tests are failing with NPE in kt-master after updating the compiler on 19.11.25
• KT-82076 Error querying members of JavaClass created for SymbolLightClassForAnnotationClass during library analysis
• KT-71596 Include Js/Wasi checkers in AbstractLLFirDiagnosticsCollector
• KT-82085 No OUTER_CLASS_ARGUMENTS_REQUIRED on type parameter bound in IDE
• KT-81873 Provide a way of including traces in phase JFR events
• KT-71929 Consider leaving the non-post-compute version at EnhancementSymbolsCache.enhancedFunctions

Analysis API. Infrastructure

• KT-83173 Analysis API Tests: Library names with RC versions aren't sanitised
• KT-65140 LL FIR: Implement AbstractFirPsiJsDiagnosticTest for LL FIR
• KT-82212 [Analysis API, LL FIR] Implement AbstractDiagnosticsFirWasmTest and AbstractDiagnosticsFirWasmWasiTest for LL FIR

Analysis API. Light Classes

• KT-82227 Value classes should expose regular static methods

Analysis API. PSI

• KT-81710 'KtTypeReference.getTypeText' does not account for 'suspend' modifier on suspend lambdas
• KT-82258 Prepare PSI for migration from context receivers to context parameters
• KT-81074 KDoc: List rendering is broken

Analysis API. Providers and Caches

• KT-82449 K2 IDE Analysis Freezes During Gradle Sync (Recursive Module Dependency Computation in KotlinModuleDependentsProviderBase.computeTransitiveDependents)
• KT-82629 'collectDiagnostics' returns stale syntax error after editor fix
• KT-74907 Analysis API: Apply platform-based library module content restrictions consistently

Analysis API. Standalone

• KT-81107 AA: KtSourceModuleBuilder.sourceRoots doesn't works with symbolic links

Analysis API. Stubs and Decompilation

• KT-82792 Stub for KtValueArgumentList inside KtAnnotationEntry should be present if it is present in psi
• KT-82527 TypeClsStubBuilder.createFunctionTypeStub throws NullPointerException
• KT-82558 Deserialized DNN type should have a fully qualified Any
• KT-81928 KaArrayAnnotationValueImpl.values missing first element
• KT-82139 Support contracts for property accessors
• KT-82198 Support context parameters in contracts

Analysis API. Surface

New Features

• KT-82851 Property accessors should inherit KDoc from the parent property
• KT-63339 Analysis API: Provide a way to extract KDoc for symbols
• KT-79070 KaTypeProvider: add API to build a default type with star projections
• KT-66566 AA: api to create functional types
• KT-66043 KtTypeCreator doesn't provide a way for creating annotated types

Performance Improvements

• KT-83694 Provide psi-based implementation of KaDeclarationSymbol#isExternal
• KT-70868 KaSymbol: support PSI-only visibility and modality for the case without compiler plugins
• KT-81627 KaFirSymbolDeclarationOverridesProvider#processOverrides should process only relevant declarations

Fixes

• KT-83152 [Analysis API, KDoc] Make class name links on constructors point to the class
• KT-83695 Deprecate KaSymbolInformationProvider#{getter, setter}DeprecationStatus
• KT-82853 Add a convenience property for testing declarations for effective external-ness
• KT-83226 Support "Collection literals" in the Analysis API
• KT-83225 Support "@IntroduceAt" in the Analysis API
• KT-83222 Support "Improve use-site defaulting for annotations" in the Analysis API
• KT-83351 Rename KaSession context parameter from 's' in bridges to something nicer
• KT-83199 Clarify API around extension points
• KT-83074 Inner enum entry class has incorrect default visibility
• KT-82442 Add Ka prefix to org.jetbrains.kotlin.analysis.api.symbols.AdditionalKDocResolutionProvider
• KT-82443 Add Ka prefix to org.jetbrains.kotlin.analysis.api.symbols.DebugSymbolRenderer
• KT-82441 Add Ka prefix to org.jetbrains.kotlin.analysis.api.compile.CodeFragmentCapturedValue
• KT-82439 Add Ka prefix to org.jetbrains.kotlin.analysis.api.components.DebuggerExtension
• KT-82438 Add Ka prefix to org.jetbrains.kotlin.analysis.api.components.DefaultTypeClassIds
• KT-68577 asPsiType and mapTypeToJvmType: leading delimiter for class in a root package
• KT-81734 MIssing "ARGUMENT_TYPE_MISMATCH" caused by self-referential generic type
• KT-82856 Redesign KotlinReferenceProviderContributor to make it extensible
• KT-82615 Clarify KtReference#resolvesByNames contract
• KT-82534 No expected type for property accessor without body
• KT-82406 Add a test to ensure that all top-level classes in the Analysis API Surface have Ka prefix
• KT-78397 investigate if there is a need in Extra support for the "various little features in contracts"
• KT-74009 Analysis API: Expose "isOverloadable" check for callable symbols similar to "OverloadChecker.isOverloadable"
• KT-78399 Check return value - check how we see from Java(+Stub) we see “annotated” signatures
• KT-80357 [Analysis API] KaType.enhancedType doesn't enhance type parameters
• KT-73659 Analysis API: The name of KaType.enhancedType is too general
• KT-80545 [Analysis API] Deprecate KaFunctionType.arity
• KT-77708 K2 Mode: Potentially redundant smart cast highlighing when passing smartcasted expressions as arguments
• KT-81264 K2 AA: KaValueParameterSymbol.hasDefaultValue is false for overriding or actual functions
• KT-81166 Forbid the usage of KaSessionComponent implementation types directly
• KT-74801 Analysis API: Publish/subscribe to modification events with a single message bus topic

Backend. Native. Debug

• KT-81741 Native: stepping into data class hashCode in lldb goes to line 1

Backend. Wasm

New Features

• KT-81485 [Wasm] DebuggerCustomFormatters generation support for single module mode
• KT-81483 [Wasm] Typescript generation support for single module mode
• KT-81484 [Wasm] Dwarf generation support for single module mode

Performance Improvements

• KT-83839 K/Wasm: CMP. Load time on Safari significantly increased with Kotlin = 2.3.20-Beta1
• KT-81524 Unnecessary Any-JsAny conversions are generated for external instanceofs

Fixes

• KT-82732 K/Wasm runtime crash when using fun reference: convertKotlinClosureToJsClosure
• KT-82649 K/Wasm: Rewrite StringBuilder to use JsString
• KT-73240 K/Wasm: consider using JS String Builtins proposal in String implementation for wasm-js target
• KT-83995 K/Wasm: 2.3.0 -> 2.3.20-Beta1 degradation in arrow tests
• KT-82309 K/Wasm: refactor _initialize function
• KT-70075 Wasm: "OutOfMemoryError: GC overhead limit exceeded" during tests
• KT-83046 K/Wasm: don't use StringBuilder implicitly for string concatenations
• KT-82645 K/Wasm: wasmJs use js "String" for number2String conversion
• KT-79937 K/Wasm: support kotlin.js.nativeInvoke annotation
• KT-67461 Use new lowering phase creation API in Wasm backend
• KT-83664 Wasm: Colon and space are not sanitized in output file names
• KT-65779 JsExport declaration name clash
• KT-82202 [Wasm] SourceMap generation support for single module mode
• KT-82162 [Wasm] Run single module tests with standalone vm's
• KT-81325 [Wasm] Remove string pool initialiser dependent code
• KT-73238 K/Wasm: stop using linear memory inside our code
• KT-83025 Wasm: Compose application is not loading
• KT-73239 K/Wasm: use JS String Builtins proposal to transfer strings to and from JS
• KT-83194 K/Wasm: create WasmIR test infrastructure
• KT-65234 K/Wasm Ensure that fp operations are aligned with other b-ends
• KT-81856 K/JS/Wasm interop: external instanceofs do not link in singleModule mode
• KT-81610 [Wasm] Add CLI test for performance metrics for klibs->binary scenario
• KT-81550 Incorrect generation of .wat files
• KT-71533 K/Wasm + K2: no error on KClass::qualifiedName usages

Compiler

New Features

• KT-75736 Enable reading/writing annotations in metadata on JVM by default
• KT-79330 Implement the first version of inference for Collection Literals
• KT-83401 Collection literals: support different types of expected types for CL
• KT-55548 JSR-305: Overload resolution ambiguity: Platform Types vs Kotlin Types
• KT-74860 Support Unit coercion (incl. fun refs) in unused return value checker
• KT-13968 Support vertx nullable annotation
• KT-79656 Use org.jetbrains.annotations.UnmodifiableView and/or org.jetbrains.annotations.Unmodifiable to infer read-only types for Java entities
• KT-81684 Implement explicit passing of context arguments using named syntax [TEST_ONLY]
• KT-80492 Checkers for operator of
• KT-82638 Collection literals: resolve to factory functions for standard library classes
• KT-82467 Improve binary and JVM compatibility by generating bridges for abstract interface methods
• KT-82655 Bridges generated for non-fake overrides shall include annotations from target methods
• KT-74223 Move Kotlin/Native TestProcessor phase to the first phase
• KT-27090 Support contracts in getter and setter for top-level extension properties
• KT-74809 Support unnamed local variables
• KT-45683 Allow generics in contract type assertions

Performance Improvements

• KT-81974 Do not eagerly initialize reflection for KProperty objects for delegated properties
• KT-83697 Native: increased bitcode produced with enabled safe casts
• KT-83036 Native: too many casts emitted with -Xgeneric-safe-casts=true
• KT-80061 Compiler (or IDEA) hangs due to importing large Kotlin reflect functions (e.g. KFunction999999999)
• KT-68592 Investigate performance implications of enabling -Xjvm-default for ir.tree module
• KT-73687 Inefficient KtCommonFile#getFileAnnotationList
• KT-71673 Consider making EnhancementSymbolsCache. enhancedFunctions using simple cache

Fixes

• KT-84773 Annotations not persisted in IR for internal external functions
• KT-78783 K2: absence of warning for KTLC-284 migration
• KT-81553 INITIALIZER_TYPE_MISMATCH and ASSIGNMENT_TYPE_MISMATCH is reported on the entire initializer
• KT-83395 Kotlin/Native 2.3.0 iOS release framework fails with Invalid LLVM module (PHI node type mismatch)
• KT-84620 Incorrect optimization of property delegation
• KT-81567 Add a use-site warning if a @DslMarker-marked annotation is used on entities where it is a no-op
• KT-81700 flaky overload resolution behaviors (false-positive errors, different final candidates, compile-time failures)
• KT-83372 compileDebugKotlinAndroid hangs in 2.3.0 with SQLDelight
• KT-82579 Update specificity rule for context parameters
• KT-83590 Some explicit backing fields must still be considered private-to-this
• KT-83849 False-positive NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS for Optional.orElse(null) call
• KT-84192 "Member overrides different '@Throws' filter from" caused by overriding in different module
• KT-72994 K2: Remove resolution to context receivers
• KT-80247 No diagnostic on unresolved type annotation from a dependency in an inferred type
• KT-78730 Move more LLVM-agnostic code to compiler/ir/backend.native or compiler/ir/backend.common
• KT-74051 Add a Continuation for tail-call suspend functions
• KT-83984 Data races around kotlinx.serialization plugin protobuf extensions registration
• KT-83317 ClassCastException: with cast kotlin.UInt to java.lang.Number when defining constant
• KT-83031 K2: unstable resolution of EnhancedNullability from type-use NotNull in presence of unused code
• KT-83824 Delegated property in Gradle DSL fails to compile
• KT-83657 [K/N] Pre-codegen inline produces invalid bitcode
• KT-81555 Kotlin scripts: top-level name-based destructuring with _ = prop fails with “exception while generating code”
• KT-83314 JSpecify @NullMarked changes Java equals(Object) to equals(Any?) causing override conflict in Kotlin 2.3
• KT-83282 JvmExposeBoxed: Duplicate annotation interface kotlin.coroutines.jvm.internal.DebugMetadata in class %class%$1 for suspend inline class value
• KT-78443 Refactor session component initialization for multi-target compilation
• KT-83427 Arguments of plugin-generated annotations are serialized incorrectly
• KT-83538 OPERATOR_RENAMED_ON_IMPORT is not reported for 'provideDelegate' operator
• KT-83537 OPERATOR_RENAMED_ON_IMPORT is not reported for 'of' operator
• KT-82721 Inconsistent explicit backing fields behavior
• KT-83589 Explicit backing fields don't likely work with intersection overrides
• KT-81951 K2: Another false positive "Assigned value is never read" in composable function
• KT-83588 Explicit backing field is falsely accessible from a subclass via a substitution override
• KT-82849 Collection literals (minor): collection literal should only be resolved to operator
• KT-83363 VerifyError: "Bad type on operand stack" on multi-line suspending call with default parameter value since API version 2.4
• KT-83570 K2: Resolve problematic IR when referencing Kotlin const from annotation in Java
• KT-83362 Starting from 2.3 DefaultImpls bridge functions deprecated with

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