| # CHANGELOG |
| |
| ## 1.4.20 |
| |
| ### Android |
| |
| - [`KT-42121`](https://youtrack.jetbrains.com/issue/KT-42121) Deprecate Kotlin Android Extensions compiler plugin |
| - [`KT-42267`](https://youtrack.jetbrains.com/issue/KT-42267) `Platform declaration clash` error in IDE when using `kotlinx.android.parcel.Parcelize` |
| - [`KT-42406`](https://youtrack.jetbrains.com/issue/KT-42406) Long or infinite code analysis on simple files modification |
| |
| ### Backend. Native |
| |
| - [`KT-27534`](https://youtrack.jetbrains.com/issue/KT-27534) Bridges to Nothing-returning methods have incorrect signature |
| - [`KT-30284`](https://youtrack.jetbrains.com/issue/KT-30284) Native: Nothing? type for expression override and crash |
| - [`KT-36430`](https://youtrack.jetbrains.com/issue/KT-36430) Optimize when with in range cases |
| - [`KT-38787`](https://youtrack.jetbrains.com/issue/KT-38787) Missing optimization for "in range" check |
| - [`KT-39100`](https://youtrack.jetbrains.com/issue/KT-39100) Make Native behaviour of property initialization consistent with JVM |
| - [`KT-39798`](https://youtrack.jetbrains.com/issue/KT-39798) Override equals/hashCode in functional interface wrappers on Native |
| - [`KT-39800`](https://youtrack.jetbrains.com/issue/KT-39800) equals/hashCode on adapted function references on Native |
| - [`KT-41394`](https://youtrack.jetbrains.com/issue/KT-41394) Compilation failed: Backend Internal error: Exception during IR lowering |
| - [`KT-41907`](https://youtrack.jetbrains.com/issue/KT-41907) Framework test segfaults on GC on watchos_x86 compiled with -opt |
| |
| ### Compiler |
| |
| #### New Features |
| |
| - [`KT-21147`](https://youtrack.jetbrains.com/issue/KT-21147) JEP 280: Indify String Concatenation (StringConcatFactory) |
| - [`KT-34178`](https://youtrack.jetbrains.com/issue/KT-34178) Scripts should be able to access imports objects |
| - [`KT-35549`](https://youtrack.jetbrains.com/issue/KT-35549) Support kotlin-android-extensions in JVM IR backend (for use with Jetpack Compose projects) |
| - [`KT-31567`](https://youtrack.jetbrains.com/issue/KT-31567) Support special semantics for underscore-named catch block parameters |
| |
| #### Performance Improvements |
| |
| - [`KT-20571`](https://youtrack.jetbrains.com/issue/KT-20571) Coroutines: Reduce number of local variables stored at suspension point |
| - [`KT-28016`](https://youtrack.jetbrains.com/issue/KT-28016) Coroutine state-machines spill/unspill shall be optimized using data-flow analysis |
| - [`KT-33394`](https://youtrack.jetbrains.com/issue/KT-33394) UI freezes triggered by QualifiedExpressionResolver.resolveToPackageOrClassPrefix |
| - [`KT-36814`](https://youtrack.jetbrains.com/issue/KT-36814) Support optimized delegated properties in JVM_IR |
| - [`KT-36829`](https://youtrack.jetbrains.com/issue/KT-36829) Optimize 'in' expressions (operator fun contains) in JVM_IR |
| - [`KT-41741`](https://youtrack.jetbrains.com/issue/KT-41741) NI: "AssertionError: Empty intersection for types" with generic Java collection |
| - [`KT-42195`](https://youtrack.jetbrains.com/issue/KT-42195) NI: prohibitively long compilation time for values of nested data structures with type inference |
| - [`KT-42221`](https://youtrack.jetbrains.com/issue/KT-42221) Native compiler never finishes frontend phase after migrating to Kotlin 1.4.10 |
| |
| #### Fixes |
| |
| - [`KT-11713`](https://youtrack.jetbrains.com/issue/KT-11713) Refine visibility check for synthetic property with protected setter |
| - [`KT-16222`](https://youtrack.jetbrains.com/issue/KT-16222) Coroutine should be clearing any internal state as soon as possible to avoid memory leaks |
| - [`KT-25519`](https://youtrack.jetbrains.com/issue/KT-25519) Extra inline marks inside suspending function callable reference bytecode |
| - [`KT-33226`](https://youtrack.jetbrains.com/issue/KT-33226) Object INSTANCE field not annotated with NotNull in generated bytecode |
| - [`KT-35495`](https://youtrack.jetbrains.com/issue/KT-35495) FIR: forbid non-Java synthetic properties |
| - [`KT-35651`](https://youtrack.jetbrains.com/issue/KT-35651) Kotlin stdlib has greater resolution priority than jars added via @file:DependsOn annotation |
| - [`KT-35716`](https://youtrack.jetbrains.com/issue/KT-35716) Using @JvmOverloads in @JvmStatic functions in interface companion objects causes a ClassFormatError |
| - [`KT-35730`](https://youtrack.jetbrains.com/issue/KT-35730) FIR: consider creating fake overrides for objects |
| - [`KT-36951`](https://youtrack.jetbrains.com/issue/KT-36951) IllegalStateException: Expected some types: Throwing exception when there is a type parameter upper bound for itself |
| - [`KT-37321`](https://youtrack.jetbrains.com/issue/KT-37321) [FIR] Support java array in type argument |
| - [`KT-37431`](https://youtrack.jetbrains.com/issue/KT-37431) [FIR] Support Builder Inference |
| - [`KT-38272`](https://youtrack.jetbrains.com/issue/KT-38272) FIR2IR: use lazy IR symbols for externals & fake overrides |
| - [`KT-38333`](https://youtrack.jetbrains.com/issue/KT-38333) FIR: CCE on red code with assignment used as expression |
| - [`KT-38334`](https://youtrack.jetbrains.com/issue/KT-38334) FIR: CCE when resolving try-as-expression |
| - [`KT-38336`](https://youtrack.jetbrains.com/issue/KT-38336) FIR: NPE with corrupted numeric constant literal |
| - [`KT-38397`](https://youtrack.jetbrains.com/issue/KT-38397) FIR: Exception while resolving contract definition |
| - [`KT-38444`](https://youtrack.jetbrains.com/issue/KT-38444) [FIR] Invoke extension lambda with safe call |
| - [`KT-38470`](https://youtrack.jetbrains.com/issue/KT-38470) FIR: ConeDefinitelyNotNullType in signature |
| - [`KT-38471`](https://youtrack.jetbrains.com/issue/KT-38471) FIR: ConeIntersectionType in signature |
| - [`KT-38925`](https://youtrack.jetbrains.com/issue/KT-38925) Internal error: wrong bytecode generated. (AssertionError: int type expected, but null was found in basic frames) |
| - [`KT-38989`](https://youtrack.jetbrains.com/issue/KT-38989) FIR: Refine sealed classes exhaustiveness in case of sealed subclass |
| - [`KT-38992`](https://youtrack.jetbrains.com/issue/KT-38992) FIR: Refine type resolution for inner classes |
| - [`KT-39000`](https://youtrack.jetbrains.com/issue/KT-39000) FIR: Support smartcast after reference equality check |
| - [`KT-39005`](https://youtrack.jetbrains.com/issue/KT-39005) FIR: Resolve plusAssign in a dependent context |
| - [`KT-39008`](https://youtrack.jetbrains.com/issue/KT-39008) FIR: Investigate strange effect of type alias and not-nullable bound on inference |
| - [`KT-39012`](https://youtrack.jetbrains.com/issue/KT-39012) FIR: Inference doesn't get through elvis to lambda parameter |
| - [`KT-39028`](https://youtrack.jetbrains.com/issue/KT-39028) FIR: Strange resolution to synthetic property with implicit extension receiver while there's an explicit receiver |
| - [`KT-39032`](https://youtrack.jetbrains.com/issue/KT-39032) FIR: Ambiguity in member scope of a type parameter with multiple bounds |
| - [`KT-39033`](https://youtrack.jetbrains.com/issue/KT-39033) FIR: Ambiguity when calling generic overridden property |
| - [`KT-39034`](https://youtrack.jetbrains.com/issue/KT-39034) FIR: Support nested extension function types |
| - [`KT-39040`](https://youtrack.jetbrains.com/issue/KT-39040) FIR: Deserialize annotations from compiled Kotlin binaries |
| - [`KT-39043`](https://youtrack.jetbrains.com/issue/KT-39043) FIR: Bare types incorrectly work with type aliases |
| - [`KT-39044`](https://youtrack.jetbrains.com/issue/KT-39044) FIR: Add fillInStackTrace to member scope of kotlin.Throwable |
| - [`KT-39046`](https://youtrack.jetbrains.com/issue/KT-39046) FIR: Implicit types in lambdas left when call argument is a type cast |
| - [`KT-39048`](https://youtrack.jetbrains.com/issue/KT-39048) FIR: Inference fails with integer literal used as Comparable |
| - [`KT-39050`](https://youtrack.jetbrains.com/issue/KT-39050) FIR: Type resolver doesn't see nested classes from super class of a local class |
| - [`KT-39070`](https://youtrack.jetbrains.com/issue/KT-39070) FIR: Ambiguity on super calls to hashCode/equals when having super interface and class |
| - [`KT-39072`](https://youtrack.jetbrains.com/issue/KT-39072) FIR: Subtyping check doesn't affect nullability of safe-call receiver |
| - [`KT-39076`](https://youtrack.jetbrains.com/issue/KT-39076) FIR: Synthetic property is not a var because of @Nullable annotation on parameter |
| - [`KT-39080`](https://youtrack.jetbrains.com/issue/KT-39080) FIR: Smart casts remain incorrect if lambda is present in when branch |
| - [`KT-39374`](https://youtrack.jetbrains.com/issue/KT-39374) Wrong bytecode generated for suspend function call with EXACTLY_ONCE lambda capturing a variable initialized in when-subject |
| - [`KT-39621`](https://youtrack.jetbrains.com/issue/KT-39621) [FIR] Support when exhaustiveness checker for java enums |
| - [`KT-40135`](https://youtrack.jetbrains.com/issue/KT-40135) JVM IR does not generate restricted suspend lambdas |
| - [`KT-40382`](https://youtrack.jetbrains.com/issue/KT-40382) Missing proper jvmSignature for synthesized equals/hashCode/toString in inline classes |
| - [`KT-40605`](https://youtrack.jetbrains.com/issue/KT-40605) JVM IR: IndexOutOfBoundsException caused by inner class passed to generic outer class method with Nothing type argument |
| - [`KT-40664`](https://youtrack.jetbrains.com/issue/KT-40664) JVM: No bounds check in optimization of `ULong in UInt..UInt` |
| - [`KT-40665`](https://youtrack.jetbrains.com/issue/KT-40665) JVM: No resolved function check when optimizing `in/contains` with mismatched bound types |
| - [`KT-41014`](https://youtrack.jetbrains.com/issue/KT-41014) FIR2IR: when/where/how to determine the presence of a backing field for a property |
| - [`KT-41018`](https://youtrack.jetbrains.com/issue/KT-41018) FIR2IR: sort members during de/serialization |
| - [`KT-41144`](https://youtrack.jetbrains.com/issue/KT-41144) False positive "Redundant spread operator" in when statement and generic vararg argument |
| - [`KT-41218`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-41374) JVM / IR: NoSuchMethodError in Android project compiler caused by combination of inline classes and coroutines |
| - [`KT-41388`](https://youtrack.jetbrains.com/issue/KT-41388) NI: Backend Internal error: Exception during IR lowering |
| - [`KT-41429`](https://youtrack.jetbrains.com/issue/KT-41429) Inline class returned from suspend function should be boxed on resume path |
| - [`KT-41465`](https://youtrack.jetbrains.com/issue/KT-41465) JVM / IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL CLASS name" caused by inline method call into multiple constructors |
| - [`KT-41484`](https://youtrack.jetbrains.com/issue/KT-41484) JVM IR: support -Xemit-jvm-type-annotations |
| - [`KT-41668`](https://youtrack.jetbrains.com/issue/KT-41668) JVM IR: incorrect enclosing constructor for lambdas in initializers of inner classes |
| - [`KT-41669`](https://youtrack.jetbrains.com/issue/KT-41669) JVM IR: incorrect hashCode intrinsic is used in JVM target 1.8 for generic type substituted with primitive |
| - [`KT-41693`](https://youtrack.jetbrains.com/issue/KT-41693) NI: Type inference in nested expression incorrectly assumes non-nullable return type of Java function, causing NullPointerException |
| - [`KT-41729`](https://youtrack.jetbrains.com/issue/KT-41729) NI: UnsupportedOperationException with invalid callable reference |
| - [`KT-41761`](https://youtrack.jetbrains.com/issue/KT-41761) JVM IR: CCE from backend on generating typeOf for non-reified type parameter with star projection in upper bound |
| - [`KT-41789`](https://youtrack.jetbrains.com/issue/KT-41789) Missing DebugMetadata in inlined suspend lambda |
| - [`KT-41913`](https://youtrack.jetbrains.com/issue/KT-41913) NI: Kotlin 1.4 type inference breaks valid code |
| - [`KT-41934`](https://youtrack.jetbrains.com/issue/KT-41934) NI: a type variable for lambda parameter has been inferred to nullable type instead of not null one |
| - [`KT-42005`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-42450) NI: "IllegalStateException: Error type encountered: NonFixed:" with coroutines |
| - [`KT-42523`](https://youtrack.jetbrains.com/issue/KT-42523) Missed DefaultImpls for interface in `-jvm-default=all` mode on inheriting it from interface compiled in old scheme |
| - [`KT-42524`](https://youtrack.jetbrains.com/issue/KT-42524) Wrong specialization diagnostic is reported on inheriting from java interface with default with -Xjvm-default=all-compatibility |
| - [`KT-42546`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-17691) Wrong argument order in resolved call with varargs |
| - [`KT-25114`](https://youtrack.jetbrains.com/issue/KT-25114) Prohibit @JvmStatic on functions in private companions |
| - [`KT-33917`](https://youtrack.jetbrains.com/issue/KT-33917) Prohibit to expose anonymous types from private inline functions |
| - [`KT-35870`](https://youtrack.jetbrains.com/issue/KT-35870) Forbid secondary enum class constructors which do not delegate to the primary constructor |
| - [`KT-39098`](https://youtrack.jetbrains.com/issue/KT-39098) NI: parameter of anonymous function can be inferred to Any? if another parameter's type is specified |
| - [`KT-41176`](https://youtrack.jetbrains.com/issue/KT-41176) NI with Gson: "ClassCastException: java.util.ArrayList cannot be cast to java.lang.Void" |
| - [`KT-41194`](https://youtrack.jetbrains.com/issue/KT-41194) ClassCastException on returning Result.failure from lambda within suspend function |
| - [`KT-42438`](https://youtrack.jetbrains.com/issue/KT-42438) NI: ClassCastException: cannot be cast to java.lang.Void caused by when statement in `run` function |
| - [`KT-42699`](https://youtrack.jetbrains.com/issue/KT-42699) False positive NON_JVM_DEFAULT_OVERRIDES_JAVA_DEFAULT diagnostic in new jvm-default modes |
| - [`KT-42706`](https://youtrack.jetbrains.com/issue/KT-42706) Kotlin 1.4 infers generic is Nothing instead of actual Foo class (Android project) |
| |
| |
| ### Docs & Examples |
| |
| - [`KT-42318`](https://youtrack.jetbrains.com/issue/KT-42318) No documentation for `kotlin.js.js` |
| |
| ### IDE |
| |
| #### New Features |
| |
| - [`KT-20775`](https://youtrack.jetbrains.com/issue/KT-20775) More kotlin kinds in new kotlin file/class menu |
| - [`KT-31331`](https://youtrack.jetbrains.com/issue/KT-31331) Improve: Optimize Import should remove unused unresolved imports |
| - [`KT-31500`](https://youtrack.jetbrains.com/issue/KT-31500) Smart enter: support get() clause |
| - [`KT-39231`](https://youtrack.jetbrains.com/issue/KT-39231) Injection: Add receiver of kotlin.text.toPattern to standard Kotlin injections |
| - [`KT-39844`](https://youtrack.jetbrains.com/issue/KT-39844) Add specific highlight for Enum class |
| |
| #### Performance Improvements |
| |
| - [`KT-39353`](https://youtrack.jetbrains.com/issue/KT-39353) Implement EnterBetweenBracesNoCommitDelegate |
| - [`KT-39720`](https://youtrack.jetbrains.com/issue/KT-39720) A lot of freezes in Kotlin project |
| - [`KT-41634`](https://youtrack.jetbrains.com/issue/KT-41634) Deadlock in org.jetbrains.kotlin.idea.framework.LibraryEffectiveKindProviderImpl.getEffectiveKind |
| - [`KT-41936`](https://youtrack.jetbrains.com/issue/KT-41936) Impossible to work with Kotlin 1.4 in 202 idea, idea eats all cpu |
| |
| #### Fixes |
| |
| - [`KT-10790`](https://youtrack.jetbrains.com/issue/KT-10790) "Move statement up" for @file-targeted annotation moves package declaration to bottom of file |
| - [`KT-15262`](https://youtrack.jetbrains.com/issue/KT-15262) "Generate toString()" is ignoring property if it has a getter |
| - [`KT-24352`](https://youtrack.jetbrains.com/issue/KT-24352) Method separators: displayed between properties, not displayed between companion object and function |
| - [`KT-29364`](https://youtrack.jetbrains.com/issue/KT-29364) "Extend selection" can't select lambda body with parameters |
| - [`KT-32403`](https://youtrack.jetbrains.com/issue/KT-32403) Clickable links in annotation parameters (like in TODOs) |
| - [`KT-32409`](https://youtrack.jetbrains.com/issue/KT-32409) Organizing imports should not remove imports while there are unresolved symbols |
| - [`KT-34566`](https://youtrack.jetbrains.com/issue/KT-34566) Too small indent after line break for multi line strings |
| - [`KT-34587`](https://youtrack.jetbrains.com/issue/KT-34587) "Move statement down" doesn't work for statement in constructor with end-of-line comment |
| - [`KT-34705`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-35424) FIR IDE: Kotlin project does not see stdlib |
| - [`KT-35732`](https://youtrack.jetbrains.com/issue/KT-35732) URLs in String literals are not clickable |
| - [`KT-35859`](https://youtrack.jetbrains.com/issue/KT-35859) Language injection doesn't work with named arguments in different position |
| - [`KT-37210`](https://youtrack.jetbrains.com/issue/KT-37210) UAST: KtLightClassForSourceDeclaration.isInheritor sometimes returns the wrong result |
| - [`KT-37219`](https://youtrack.jetbrains.com/issue/KT-37219) File level OptIn annotation is not recognized by the IDE |
| - [`KT-38959`](https://youtrack.jetbrains.com/issue/KT-38959) IDE: False negative EXPLICIT_DELEGATION_CALL_REQUIRED, "IllegalArgumentException: Range must be inside element being annotated" |
| - [`KT-39398`](https://youtrack.jetbrains.com/issue/KT-39398) Wrong import of unrelated object member is suggested for receiver |
| - [`KT-39457`](https://youtrack.jetbrains.com/issue/KT-39457) Separate decompiled declarations Light implementation from LightClasses infrastructure |
| - [`KT-39899`](https://youtrack.jetbrains.com/issue/KT-39899) KotlinOptimizeImportsRefactoringHelper: ISE: Attempt to modify PSI for non-committed Document |
| - [`KT-40578`](https://youtrack.jetbrains.com/issue/KT-40578) UAST: write accesses to Kotlin properties should resolve to setter |
| - [`KT-41290`](https://youtrack.jetbrains.com/issue/KT-41290) KotlinClassViaConstructorUSimpleReferenceExpression resolves to PsiMethod instead of PsiClass |
| - [`KT-42029`](https://youtrack.jetbrains.com/issue/KT-42029) HMPP, IDE: NPE from `FacetSerializationKt.getFacetPlatformByConfigurationElement` on project opening |
| - [`KT-43202`](https://youtrack.jetbrains.com/issue/KT-43202) On 1.4.20-RC version AS ask for xml compatibility update for EAP version of plugin |
| - [`KT-42883`](https://youtrack.jetbrains.com/issue/KT-42883) No highlighting for elements marked as @Deprecated in stdlib |
| |
| ### IDE. Android |
| |
| - [`KT-42406`](https://youtrack.jetbrains.com/issue/KT-42406) Long or infinite code analysis on simple files modification |
| - [`KT-42061`](https://youtrack.jetbrains.com/issue/KT-42061) Highlighting is broken in Android activity |
| - [`KT-41930`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-26235) Kotlin methods/fields don't have icons in Java completion |
| |
| ### IDE. Debugger |
| |
| - [`KT-37486`](https://youtrack.jetbrains.com/issue/KT-37486) Kotlin plugin keeps reference to stream debugger support classes after stream debugger plugin is disabled |
| - [`KT-38659`](https://youtrack.jetbrains.com/issue/KT-38659) Evaluate Expression: `toString()` on variable returns error when breakpoint is in `commonTest` sourceset |
| - [`KT-39309`](https://youtrack.jetbrains.com/issue/KT-39309) Debugger: Prolonged "Collecting data" for variables when breakpoint is inside `respondHtml` |
| - [`KT-39435`](https://youtrack.jetbrains.com/issue/KT-39435) "Collecting data..." in debugger variables view never finishes |
| - [`KT-39717`](https://youtrack.jetbrains.com/issue/KT-39717) Debugger shows "Collecting data..." forever for instances of some class |
| - [`KT-40386`](https://youtrack.jetbrains.com/issue/KT-40386) Memory leak detected: 'org.jetbrains.kotlin.idea.debugger.coroutine.view.XCoroutineView' |
| - [`KT-40635`](https://youtrack.jetbrains.com/issue/KT-40635) Coroutines Debugger: make IDE plugin accept coroutines 1.3.8-rc* versions as well |
| - [`KT-41505`](https://youtrack.jetbrains.com/issue/KT-41505) Coroutines Debugger: “Access is allowed from event dispatch thread with IW lock only.” |
| |
| ### IDE. Decompiler, Indexing, Stubs |
| |
| - [`KT-28732`](https://youtrack.jetbrains.com/issue/KT-28732) Stub file element types should be registered early enough |
| - [`KT-41346`](https://youtrack.jetbrains.com/issue/KT-41346) IDE: "AssertionError: Stub type mismatch: USER_TYPE!=REFERENCE_EXPRESSION" with `CollapsedDumpParser` class from IDEA SDK |
| - [`KT-41859`](https://youtrack.jetbrains.com/issue/KT-41859) File analysis never ending with kotlinx.cli (AssertionError: Stub type mismatch: TYPEALIAS!=CLASS) |
| - [`KT-41640`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-41646) "AssertionError: ContentElementType: FILE"; Code analysis never finishes on some files from my project |
| |
| ### IDE. Gradle Integration |
| |
| - [`KT-34271`](https://youtrack.jetbrains.com/issue/KT-34271) Support `pureKotlinSourceFolders` for MPP projects |
| - [`KT-37106`](https://youtrack.jetbrains.com/issue/KT-37106) Gradle + IDE integration: on creating source roots from Project tree IDEA creates incorrect settings |
| - [`KT-38830`](https://youtrack.jetbrains.com/issue/KT-38830) addTransitiveDependenciesOnImplementedModules performance is slowing down Android Studio Gradle Sync |
| - [`KT-41703`](https://youtrack.jetbrains.com/issue/KT-41703) Kotlin plugin not functional: PluginException: While loading class org.jetbrains.kotlin.idea.core.script.KotlinScriptDependenciesClassFinder |
| |
| ### IDE. Gradle. Script |
| |
| - [`KT-35092`](https://youtrack.jetbrains.com/issue/KT-35092) “Unable to get Gradle home directory” popup and no build.gradle.kts highlighting right after creating a new project |
| - [`KT-37590`](https://youtrack.jetbrains.com/issue/KT-37590) Wrong notification for precompiled build script |
| - [`KT-39523`](https://youtrack.jetbrains.com/issue/KT-39523) Go to Declaration navigates to decompiled classfile instead of sources in case of jumping to Gradle plugin sources in buildSrc |
| - [`KT-39542`](https://youtrack.jetbrains.com/issue/KT-39542) EA-218043: java.util.NoSuchElementException: No element of given type found (GradleBuildRootsManager) |
| - [`KT-39790`](https://youtrack.jetbrains.com/issue/KT-39790) List of standalone script should be saved between IDE restarts |
| - [`KT-39910`](https://youtrack.jetbrains.com/issue/KT-39910) build.gradle.kts isn't highlighted after import |
| - [`KT-39916`](https://youtrack.jetbrains.com/issue/KT-39916) init.gradle.kts isn't highlighted |
| - [`KT-40243`](https://youtrack.jetbrains.com/issue/KT-40243) gradle.kts: standalone script under build root isn't highlighted as standalone |
| - [`KT-41141`](https://youtrack.jetbrains.com/issue/KT-41141) Gradle Kotlin DSL: "cannot access 'java.lang.Comparable'. Check your module classpath" with empty JDK in Project structure |
| - [`KT-41281`](https://youtrack.jetbrains.com/issue/KT-41281) Multiple Script Definitions warning shown in git project having multiple Gradle projects |
| |
| ### IDE. Hints |
| |
| - [`KT-32368`](https://youtrack.jetbrains.com/issue/KT-32368) Rework Inline hints settings so that they look appropriate with the new UI in 2019.3 |
| - [`KT-38027`](https://youtrack.jetbrains.com/issue/KT-38027) Support Code Vision feature in Kotlin |
| - [`KT-42014`](https://youtrack.jetbrains.com/issue/KT-42014) ClassNotFoundException in Android Studio 4.2 after installing 1.4.20 plugin |
| |
| ### IDE. Hints. Parameter Info |
| |
| - [`KT-24172`](https://youtrack.jetbrains.com/issue/KT-24172) Parameter info marks signature as inapplicable when using argument labels |
| - [`KT-41617`](https://youtrack.jetbrains.com/issue/KT-41617) Parameter Info shows nothing inside already present type arguments of supertype |
| - [`KT-41645`](https://youtrack.jetbrains.com/issue/KT-41645) Add support for mixed named arguments to parameter info popup |
| |
| ### IDE. Inspections and Intentions |
| |
| #### New Features |
| |
| - [`KT-14578`](https://youtrack.jetbrains.com/issue/KT-14578) Suggest "Convert lambda to reference" intention for generic extension function |
| - [`KT-19321`](https://youtrack.jetbrains.com/issue/KT-19321) Warn if method with nullable return type always returns non-null |
| - [`KT-20718`](https://youtrack.jetbrains.com/issue/KT-20718) Add a quick fix for "this class has no constructor" error on 'expect' annotation classes |
| - [`KT-21223`](https://youtrack.jetbrains.com/issue/KT-21223) Add inspection for incomplete destructuring |
| - [`KT-22420`](https://youtrack.jetbrains.com/issue/KT-22420) Intention to replace a = b with b.also { a = it } |
| - [`KT-39930`](https://youtrack.jetbrains.com/issue/KT-39930) Add inspection for nullable Boolean in `if` condition |
| - [`KT-40016`](https://youtrack.jetbrains.com/issue/KT-40016) Replace 'a.toLowerCase() == b.toLowerCase()' with 'a.equals(b, ignoreCase = true)' inspection |
| - [`KT-40283`](https://youtrack.jetbrains.com/issue/KT-40283) Inspection which replaces `also`/`apply` with nested `forEach` to `onEach` |
| - [`KT-40769`](https://youtrack.jetbrains.com/issue/KT-40769) Add intention to replace isBlank/isNotBlank method negation |
| |
| #### Fixes |
| |
| - [`KT-12222`](https://youtrack.jetbrains.com/issue/KT-12222) Intention 'Convert to block body' should take nullability of overriden method into account when expression is of platform type |
| - [`KT-14395`](https://youtrack.jetbrains.com/issue/KT-14395) Lambda to Reference doesn't work for generic types |
| - [`KT-15846`](https://youtrack.jetbrains.com/issue/KT-15846) 'Change lambda expression return type' quick fix does nothing |
| - [`KT-15944`](https://youtrack.jetbrains.com/issue/KT-15944) IDEA doesn't suggest to replace deprecated get set operator functions when it used as operator |
| - [`KT-17222`](https://youtrack.jetbrains.com/issue/KT-17222) "Convert reference to lambda" creates red code for method with default argument values |
| - [`KT-18125`](https://youtrack.jetbrains.com/issue/KT-18125) "Wrap with let {...}" intention not available in all cases |
| - [`KT-20438`](https://youtrack.jetbrains.com/issue/KT-20438) Naming convention inspections: factory functions that are named like classes are flagged |
| - [`KT-24138`](https://youtrack.jetbrains.com/issue/KT-24138) Incorrect behavior in "convert reference to lambda" with new inference enabled, on function reference with default arguments |
| - [`KT-29844`](https://youtrack.jetbrains.com/issue/KT-29844) "Create class from usage" should mark constructor of created class as internal if its parameters have internal visibility |
| - [`KT-30928`](https://youtrack.jetbrains.com/issue/KT-30928) "Show hints for suspend calls" is too easy to enable and hard to disable |
| - [`KT-31749`](https://youtrack.jetbrains.com/issue/KT-31749) "Surround with null check" produces incorrect check for 'in' expression |
| - [`KT-32963`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-33211) Quickfix "add parameter" for method references should infer functional type instead of KFunction |
| - [`KT-33258`](https://youtrack.jetbrains.com/issue/KT-33258) "Merge 'if's" intention drops comment before nested if |
| - [`KT-34572`](https://youtrack.jetbrains.com/issue/KT-34572) Convert to block body action improperly works with suppress annotations |
| - [`KT-35128`](https://youtrack.jetbrains.com/issue/KT-35128) Intention `Convert member to extension` hides property delegate text with single line comment |
| - [`KT-35214`](https://youtrack.jetbrains.com/issue/KT-35214) Intention `Put parameters on one line`: don't suggest if parameters has end-of-line comments |
| - [`KT-35320`](https://youtrack.jetbrains.com/issue/KT-35320) False positive "Replace explicit parameter 'x' with 'it'" in 'when' expression which returns lambda |
| - [`KT-35525`](https://youtrack.jetbrains.com/issue/KT-35525) False positive intention for 'run': "Convert to 'let'" when invoked without receiver |
| - [`KT-35526`](https://youtrack.jetbrains.com/issue/KT-35526) Intention "Eliminate argument of 'when'" is broken for 'when' expression without 'else' branch |
| - [`KT-35805`](https://youtrack.jetbrains.com/issue/KT-35805) FoldInitializerAndIfToElvis: should not add new line for multiline initializer |
| - [`KT-36051`](https://youtrack.jetbrains.com/issue/KT-36051) IfThenToSafeAccessInspection: do not report if condition is SENSELESS_COMPARISON |
| - [`KT-37748`](https://youtrack.jetbrains.com/issue/KT-37748) "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter |
| - [`KT-37841`](https://youtrack.jetbrains.com/issue/KT-37841) IllegalStateException after "add non-null asserted call" on nullable function reference |
| - [`KT-38139`](https://youtrack.jetbrains.com/issue/KT-38139) False negative "Add suspend modifier" quickfix when suspend function is called in inline lambda |
| - [`KT-38267`](https://youtrack.jetbrains.com/issue/KT-38267) False positive "Call on collection type may be reduced" with Java platform types: suggested to reduce 'mapNotNull' call to 'map' |
| - [`KT-38282`](https://youtrack.jetbrains.com/issue/KT-38282) False positive "Remove redundant spread operator" inspection with array as class property or fun argument |
| - [`KT-38915`](https://youtrack.jetbrains.com/issue/KT-38915) "Remove explicit type specification" intention should be disabled in explicit API mode |
| - [`KT-38981`](https://youtrack.jetbrains.com/issue/KT-38981) "Specify return type explicitly" inspection is not reported for declaration annotated with @PublishedApi in Explicit Api mode |
| - [`KT-39026`](https://youtrack.jetbrains.com/issue/KT-39026) 'Specify return type explicitly' intention duplicates compiler warning in Explicit api mode |
| - [`KT-39200`](https://youtrack.jetbrains.com/issue/KT-39200) False positive "Redundant qualifier name" with same-named member object and companion property |
| - [`KT-39263`](https://youtrack.jetbrains.com/issue/KT-39263) False positive "Variable should be inlined" for override value in initialized object |
| - [`KT-39311`](https://youtrack.jetbrains.com/issue/KT-39311) Batch quick fix name for "Change file's package" is truncated |
| - [`KT-39393`](https://youtrack.jetbrains.com/issue/KT-39393) "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter for outer function |
| - [`KT-39454`](https://youtrack.jetbrains.com/issue/KT-39454) False positive "Unused symbol" with private anonymous object property |
| - [`KT-39467`](https://youtrack.jetbrains.com/issue/KT-39467) False negative "Move variable declaration into when" if a variable declaration is placed on a new line |
| - [`KT-39490`](https://youtrack.jetbrains.com/issue/KT-39490) 'Wrap with ?.let' quickfix put the receiver in `let` lambda |
| - [`KT-39552`](https://youtrack.jetbrains.com/issue/KT-39552) Merge 'if's intention drops comment after nested if |
| - [`KT-39604`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-39772) "Redundant 'Unit'" should support lambdas |
| - [`KT-40215`](https://youtrack.jetbrains.com/issue/KT-40215) "Create abstract function" quick fix suggested even though surrounding class is non-abstract |
| - [`KT-40448`](https://youtrack.jetbrains.com/issue/KT-40448) "Convert call chain into sequence": support functions added in Kotlin 1.4 |
| - [`KT-40558`](https://youtrack.jetbrains.com/issue/KT-40558) False positive "Move to class body" intention on data class constructor property |
| - [`KT-41338`](https://youtrack.jetbrains.com/issue/KT-41338) False positive "Redundant 'asSequence' call" when Map.Entry properties are used. |
| - [`KT-41615`](https://youtrack.jetbrains.com/issue/KT-41615) "Unused equals expression" inspection: highlight whole expression with yellow background |
| - [`KT-43037`](https://youtrack.jetbrains.com/issue/KT-43037) Disable "Incomplete destructuring declaration" in 1.4.20 |
| |
| ### IDE. J2K |
| |
| - [`KT-20421`](https://youtrack.jetbrains.com/issue/KT-20421) J2K: SUPERTYPE_NOT_INITIALIZED for object extending base class |
| - [`KT-37298`](https://youtrack.jetbrains.com/issue/KT-37298) J2K: implicit widening conversion for whole argument expression is transformed to cast on subexpression |
| - [`KT-38879`](https://youtrack.jetbrains.com/issue/KT-38879) J2K loses class annotations when converting class to object |
| - [`KT-39149`](https://youtrack.jetbrains.com/issue/KT-39149) J2K fails with augmented assignment operators when multiplying int by a non-int |
| - [`KT-40359`](https://youtrack.jetbrains.com/issue/KT-40359) J2K: Conversion of invalid octal numbers throws NumberFormatException |
| - [`KT-40363`](https://youtrack.jetbrains.com/issue/KT-40363) J2K: Converting HEX integer literal in for-loop throws NumberFormatException |
| |
| ### IDE. JS |
| |
| - [`KT-39319`](https://youtrack.jetbrains.com/issue/KT-39319) KJS: Support debugging through new Intellij 202 API |
| - [`KT-41328`](https://youtrack.jetbrains.com/issue/KT-41328) KJS / Gradle: explicitApi mode doesn't work |
| |
| ### IDE. KDoc |
| |
| - [`KT-17926`](https://youtrack.jetbrains.com/issue/KT-17926) IDE should show documentation for a class if the constructor has no docs. |
| - [`KT-19069`](https://youtrack.jetbrains.com/issue/KT-19069) KDoc: show default argument values |
| - [`KT-37132`](https://youtrack.jetbrains.com/issue/KT-37132) Redundant @NotNull annotation in a Quick Documentation pop-up |
| |
| ### IDE. Misc |
| |
| - [`KT-39327`](https://youtrack.jetbrains.com/issue/KT-39327) Get rid of usages of internal classes ModuleOrderEntryImpl and LibraryImpl |
| - [`KT-40455`](https://youtrack.jetbrains.com/issue/KT-40455) Improve support for EditorConfig |
| |
| ### IDE. Navigation |
| |
| - [`KT-24616`](https://youtrack.jetbrains.com/issue/KT-24616) Find usages fails to find setter usage |
| - [`KT-38762`](https://youtrack.jetbrains.com/issue/KT-38762) "Cannot access 'java.io.Serializable' which is a supertype of 'kotlin.Int'" brokes navigation to constructor parameter declaration |
| - [`KT-39558`](https://youtrack.jetbrains.com/issue/KT-39558) Call Hierarchy shows references from KDoc |
| - [`KT-40788`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-40960) Unable to find usages in java of Kotlin constructor in library when sources is attached. |
| |
| ### IDE. Project View |
| |
| - [`KT-37528`](https://youtrack.jetbrains.com/issue/KT-37528) 'Add Kotlin File/Class' suggests file before class |
| |
| ### IDE. Refactorings |
| |
| - [`KT-19744`](https://youtrack.jetbrains.com/issue/KT-19744) "Change Signature" is not available on `constructor` keyword in primary constructor |
| - [`KT-22170`](https://youtrack.jetbrains.com/issue/KT-22170) "Change Signature" ignores Java usages of methods marked with @JvmStatic |
| - [`KT-37517`](https://youtrack.jetbrains.com/issue/KT-37517) Invalid qualified name on copy-paste in build.gradle.kts |
| |
| ### IDE. Run Configurations |
| |
| - [`KT-24463`](https://youtrack.jetbrains.com/issue/KT-24463) MPP, Intellij runner: Run does not add resource directory to classpath |
| - [`KT-36370`](https://youtrack.jetbrains.com/issue/KT-36370) Hide run gutter icons for not yet implemented targets in multiplatform projects |
| - [`KT-39788`](https://youtrack.jetbrains.com/issue/KT-39788) MPP, Gradle runner: Run does not add resource directory to classpath on project reopen without Gradle sync |
| |
| ### IDE. Scratch |
| |
| - [`KT-40557`](https://youtrack.jetbrains.com/issue/KT-40557) IDE / Scratch: .kt files are treated as Kotlin scratches, opening fails |
| |
| ### IDE. Script |
| |
| - [`KT-35825`](https://youtrack.jetbrains.com/issue/KT-35825) Custom kotlin scripts have no project import suggestions in sub modules. |
| - [`KT-39796`](https://youtrack.jetbrains.com/issue/KT-39796) Performance of KotlinScriptDependenciesClassFinder |
| - [`KT-41622`](https://youtrack.jetbrains.com/issue/KT-41622) IDE: Kotlin scripting support can't find context class from same project |
| - [`KT-41905`](https://youtrack.jetbrains.com/issue/KT-41905) IDE / Script: FilePathPattern parameter in @KotlinScript annotation is not reflected correctly in Pattern / Extension |
| - [`KT-42206`](https://youtrack.jetbrains.com/issue/KT-42206) Cannot load script definitions using org.jetbrains.kotlin.jsr223.ScriptDefinitionForExtensionAndIdeConsoleRootsSource |
| |
| ### IDE. Tests Support |
| |
| - [`KT-28854`](https://youtrack.jetbrains.com/issue/KT-28854) Run/Debug configurations: "Redirect input from" option is not available for Kotlin apps |
| - [`KT-36909`](https://youtrack.jetbrains.com/issue/KT-36909) IDE attempts to run non-JVM tests launched from context menu as JVM ones |
| - [`KT-37799`](https://youtrack.jetbrains.com/issue/KT-37799) Don't show a target choice in context menu for a test launched on specific platform |
| |
| ### IDE. Wizards |
| |
| - [`KT-37965`](https://youtrack.jetbrains.com/issue/KT-37965) New Project wizard 1.4+: adding JUnit5 test library add dependency to runner |
| - [`KT-40527`](https://youtrack.jetbrains.com/issue/KT-40527) Node.JS application template in New Project Wizard |
| - [`KT-40874`](https://youtrack.jetbrains.com/issue/KT-40874) Open new project wizard help page in browser when clicking help button in new project wizard |
| - [`KT-41417`](https://youtrack.jetbrains.com/issue/KT-41417) Add react template to new project wizard |
| - [`KT-41418`](https://youtrack.jetbrains.com/issue/KT-41418) Wizard: Support KJS compiler choice |
| - [`KT-41958`](https://youtrack.jetbrains.com/issue/KT-41958) New project wizard: Backend/Console applications template with Groovy DSL missing compileTestKotlin block |
| - [`KT-42372`](https://youtrack.jetbrains.com/issue/KT-42372) Rrename test classes in wizard template to avoid name clashing |
| |
| ### JavaScript |
| |
| - [`KT-38136`](https://youtrack.jetbrains.com/issue/KT-38136) JS IR BE: add an ability to generate separate js files for each module and maybe each library |
| - [`KT-38868`](https://youtrack.jetbrains.com/issue/KT-38868) [MPP / JS / IR] IllegalStateException: "Serializable class must have single primary constructor" for expect class without primary constructor with @Serializable annotation |
| - [`KT-39088`](https://youtrack.jetbrains.com/issue/KT-39088) [ KJS / IR ] IllegalStateException: Concrete fake override IrBasedFunctionHandle |
| - [`KT-39367`](https://youtrack.jetbrains.com/issue/KT-39367) KJS: .d.ts generation not working for objects |
| - [`KT-39378`](https://youtrack.jetbrains.com/issue/KT-39378) KJS / IR: "IllegalStateException: Operation is unsupported" with binaries.executable() and external function inside `for` loop with Iterator as return type |
| - [`KT-41275`](https://youtrack.jetbrains.com/issue/KT-41275) KJS / IR: "IllegalStateException: Can't find name for declaration FUN" caused by default value in constructor parameter |
| - [`KT-41627`](https://youtrack.jetbrains.com/issue/KT-41627) KJS / IR / Serialization: IllegalStateException: Serializable class must have single primary constructor |
| - [`KT-37829`](https://youtrack.jetbrains.com/issue/KT-37829) Kotlin JS IR: "Properties without fields are not supported" for companion objects |
| - [`KT-39740`](https://youtrack.jetbrains.com/issue/KT-39740) KJS / IR: Can't use Serializable and JsExport annotations at the same time |
| |
| ### KMM Plugin |
| |
| - [`KT-41522`](https://youtrack.jetbrains.com/issue/KT-41522) KMM: exceptions for Mobile Multiplatform plugin are suggested to report to Google, not JetBrains |
| - [`KT-42065`](https://youtrack.jetbrains.com/issue/KT-42065) [KMM plugin] iOS apps fail to launch on iOS simulator with Xcode 12 |
| |
| ### Libraries |
| |
| - [`KT-41799`](https://youtrack.jetbrains.com/issue/KT-41799) String.replace performance improvements |
| - [`KT-43306`](https://youtrack.jetbrains.com/issue/KT-43306) Deprecate createTempFile and createTempDir functions in kotlin.io |
| - [`KT-19192`](https://youtrack.jetbrains.com/issue/KT-19192) Provide file system extensions/APIs based on java.nio.file.Path |
| - [`KT-41837`](https://youtrack.jetbrains.com/issue/KT-41837) Remove @ExperimentalStdlibApi from CancellationException |
| |
| ### Middle-end. IR |
| |
| - [`KT-40193`](https://youtrack.jetbrains.com/issue/KT-40193) IR: pluginContext.referenceClass() is not resolving typealias |
| - [`KT-41181`](https://youtrack.jetbrains.com/issue/KT-41181) Kotlin/Native 1.4.0 compiler fails on data class with >120 fields |
| |
| ### Native. C and ObjC Import |
| |
| - [`KT-41250`](https://youtrack.jetbrains.com/issue/KT-41250) [C-interop] Stubs for C functions without parameter names should have non-stable names |
| - [`KT-41639`](https://youtrack.jetbrains.com/issue/KT-41639) Use LazyIR for enums and structs from cached libraries |
| - [`KT-41655`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-38641) Kotlin-Multiplatform: Objective-C `description` method name collision in Swift |
| - [`KT-39206`](https://youtrack.jetbrains.com/issue/KT-39206) New line characters in @Deprecated annotation cause syntax error in Kotlin/native exported header |
| |
| ### Native. Platform libraries |
| |
| - [`KT-42191`](https://youtrack.jetbrains.com/issue/KT-42191) Support for Xcode 12 |
| |
| ### Native. Runtime. Memory |
| |
| - [`KT-42275`](https://youtrack.jetbrains.com/issue/KT-42275) "Memory.cpp:1605: runtime assert: Recursive GC is disallowed" sometimes when using Kotlin from Swift deinit |
| |
| ### Native. Stdlib |
| |
| - [`KT-39145`](https://youtrack.jetbrains.com/issue/KT-39145) MutableData append method |
| |
| ### Tools. Android Extensions |
| |
| - [`KT-42342`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-35111) Extend CLI compilers help with link to online docs |
| - [`KT-41916`](https://youtrack.jetbrains.com/issue/KT-41916) Add JVM target bytecode version 15 |
| |
| ### Tools. Commonizer |
| |
| - [`KT-41220`](https://youtrack.jetbrains.com/issue/KT-41220) [Commonizer] Short-circuit type aliases |
| - [`KT-41247`](https://youtrack.jetbrains.com/issue/KT-41247) [Commonizer] Missed supertypes in commonized class |
| - [`KT-41643`](https://youtrack.jetbrains.com/issue/KT-41643) Commonizer exception for targets [ios_x64], [macos_x64] |
| - [`KT-42574`](https://youtrack.jetbrains.com/issue/KT-42574) HMPP: unresolved platform.* imports in nativeMain source set |
| |
| ### Tools. Compiler Plugins |
| |
| - [`KT-36329`](https://youtrack.jetbrains.com/issue/KT-36329) Provide diagnostic in kotlinx.serialization when custom serializer mismatches property type |
| - [`KT-40030`](https://youtrack.jetbrains.com/issue/KT-40030) Move the Parcelize functionality out of the Android Extensions plugin |
| |
| ### Tools. Gradle |
| |
| - [`KT-33908`](https://youtrack.jetbrains.com/issue/KT-33908) Make Kotlin Gradle plugin compatible with the Gradle configuration cache |
| - [`KT-35341`](https://youtrack.jetbrains.com/issue/KT-35341) KotlinCompile: Symlinked friend paths are no longer supported |
| |
| ### Tools. Gradle. JS |
| |
| #### New Features |
| |
| - [`KT-35330`](https://youtrack.jetbrains.com/issue/KT-35330) Allow to customise generated package.json |
| - [`KT-39825`](https://youtrack.jetbrains.com/issue/KT-39825) Provide single point of Webpack configuration in Gradle script |
| - [`KT-41054`](https://youtrack.jetbrains.com/issue/KT-41054) Support Yarn resolutions |
| - [`KT-41340`](https://youtrack.jetbrains.com/issue/KT-41340) Add flag to suppress kotlin2js deprecation message |
| - [`KT-41566`](https://youtrack.jetbrains.com/issue/KT-41566) Kotlin/JS: Support JavaScript Library distribution |
| - [`KT-42222`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-42339) Support dukat binaries generation |
| |
| #### Fixes |
| |
| - [`KT-39515`](https://youtrack.jetbrains.com/issue/KT-39515) package.json is regenerated without a visible reason |
| - [`KT-39838`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-39995) Collect statistic about generateExternals feature |
| - [`KT-40087`](https://youtrack.jetbrains.com/issue/KT-40087) Kotlin/JS, IR backend: browserRun: update in continuous mode fails: "ENOENT: no such file or directory" referring output .js |
| - [`KT-40159`](https://youtrack.jetbrains.com/issue/KT-40159) Implement workaround / fix for webpack's "window is not defined" |
| - [`KT-40178`](https://youtrack.jetbrains.com/issue/KT-40178) Browser run task prints output in TeamCity format |
| - [`KT-40201`](https://youtrack.jetbrains.com/issue/KT-40201) Kotlin/JS: Gradle: public package.json has empty `devDependencies {}` |
| - [`KT-40202`](https://youtrack.jetbrains.com/issue/KT-40202) Kotlin/JS: Gradle: NPM version range operators are written into package.json as escape sequences |
| - [`KT-40342`](https://youtrack.jetbrains.com/issue/KT-40342) [Gradle, JS, Maven] "Cannot find module" generating fake NPM module from Maven dependendency |
| - [`KT-40462`](https://youtrack.jetbrains.com/issue/KT-40462) Collect statistic about usages of kotlin.js.generate.executable.default option |
| - [`KT-40753`](https://youtrack.jetbrains.com/issue/KT-40753) Type script definition file is not referenced as types in the package.json |
| - [`KT-40812`](https://youtrack.jetbrains.com/issue/KT-40812) Node.JS run working directory |
| - [`KT-40865`](https://youtrack.jetbrains.com/issue/KT-40865) KJS / Gradle: Registering a task with a type that directly extends AbstractTask has been deprecated |
| - [`KT-40986`](https://youtrack.jetbrains.com/issue/KT-40986) KJS / Gradle: BuildOperationQueueFailure when two different versions of js library are used as dependencies |
| - [`KT-41125`](https://youtrack.jetbrains.com/issue/KT-41125) Bump NPM versions in 1.4.20 |
| - [`KT-41286`](https://youtrack.jetbrains.com/issue/KT-41286) KJS / Gradle: args order in runTask is changed in 1.4.0 |
| - [`KT-41475`](https://youtrack.jetbrains.com/issue/KT-41475) KJS / Gradle: debug mode doesn't support custom launchers in karma config |
| - [`KT-41662`](https://youtrack.jetbrains.com/issue/KT-41662) Kotlin/JS: with CSS support mode == "extract" browser test fails even without CSS usage: "Error in config file!" |
| - [`KT-42494`](https://youtrack.jetbrains.com/issue/KT-42494) KJS / Gradle: "Configuration cache state could not be cached" caused by Gradle configuration cache |
| |
| ### Tools. Gradle. Native |
| |
| - [`KT-39764`](https://youtrack.jetbrains.com/issue/KT-39764) Assertions are disabled when running K/N compiler in Gradle process |
| - [`KT-39999`](https://youtrack.jetbrains.com/issue/KT-39999) Cocoapods plugin's dummy header cannot be compiled |
| - [`KT-40999`](https://youtrack.jetbrains.com/issue/KT-40999) CocoaPods Gradle plugin: Support custom cinterop options when declaring a pod dependency. |
| - [`KT-41367`](https://youtrack.jetbrains.com/issue/KT-41367) CocoaPods Gradle plugin: support git repository dependency |
| - [`KT-41844`](https://youtrack.jetbrains.com/issue/KT-41844) Kotlin 1.4.10 gradle configuration error with cocoapods using multiple multiplatform modules |
| - [`KT-42531`](https://youtrack.jetbrains.com/issue/KT-42531) Gradle task "podGenIos" fails if a Pod with a static library is added. |
| |
| ### Tools. Incremental Compile |
| |
| - [`KT-37446`](https://youtrack.jetbrains.com/issue/KT-37446) Incremental analysis for Java sources fails when run on JDK 11 |
| |
| ### Tools. Parcelize |
| |
| - [`KT-39981`](https://youtrack.jetbrains.com/issue/KT-39981) Android parcel 'java.lang.VerifyError: Bad return type' |
| - [`KT-42267`](https://youtrack.jetbrains.com/issue/KT-42267) `Platform declaration clash` error in IDE when using `kotlinx.android.parcel.Parcelize` |
| - [`KT-42958`](https://youtrack.jetbrains.com/issue/KT-42958) False positive IDE error on classes with kotlinx.parcelize.Parcelize on project initial import |
| - [`KT-43290`](https://youtrack.jetbrains.com/issue/KT-43290) Typo in error message for `ErrorsParcelize.DEPRECATED_ANNOTATION` - kotlin.parcelize instead of kotlinx.parcelize |
| - [`KT-43291`](https://youtrack.jetbrains.com/issue/KT-43291) Diagnostic deprecation messages should not be shown in case `kotlin-android-extensions` plugin is applied |
| |
| ### Tools. Scripts |
| |
| - [`KT-37987`](https://youtrack.jetbrains.com/issue/KT-37987) Kotlin script: hyphen arguments not forwarded to script |
| - [`KT-38404`](https://youtrack.jetbrains.com/issue/KT-38404) Scripting API: Provide Location of Annotation Usage |
| - [`KT-39502`](https://youtrack.jetbrains.com/issue/KT-39502) Scripting: reverse order of Severity enum so that ERROR > INFO |
| - [`KT-42335`](https://youtrack.jetbrains.com/issue/KT-42335) No "caused by" info about an exception that thrown in Kotlin Script |
| |
| ### Tools. kapt |
| |
| - [`KT-25960`](https://youtrack.jetbrains.com/issue/KT-25960) Interfaces annotated with JvmDefault has wrong modifiers during annotation processing |
| - [`KT-37732`](https://youtrack.jetbrains.com/issue/KT-37732) Kapt task is broken after update to 1.3.70/1.3.71 |
| - [`KT-42915`](https://youtrack.jetbrains.com/issue/KT-42915) Kapt generates invalid stubs for static methods in interfaces in Kotlin 1.4.20-M2 |
| |
| |
| ## 1.4.10 |
| |
| ### Compiler |
| |
| #### Performance Improvements |
| |
| - [`KT-41149`](https://youtrack.jetbrains.com/issue/KT-41149) NI: Upgraded project from 1.3.72 to 1.4.0 hangs during build |
| - [`KT-41335`](https://youtrack.jetbrains.com/issue/KT-41335) Kotlin Out of Memory When evaluating expression |
| - [`KT-41400`](https://youtrack.jetbrains.com/issue/KT-41400) NI: Huge performance regression for kotlin compiler from 1.3.72 to 1.4.0 due to using list of dozen lambdas in a call |
| |
| #### Fixes |
| |
| - [`KT-41005`](https://youtrack.jetbrains.com/issue/KT-41005) Coercion to Unit doesn't take into account nullability of a return type for lambda |
| - [`KT-41043`](https://youtrack.jetbrains.com/issue/KT-41043) NI: StackOverflowError through `PostponedArgumentInputTypesResolver.getAllDeeplyRelatedTypeVariables` |
| - [`KT-41135`](https://youtrack.jetbrains.com/issue/KT-41135) Type Inference Regression For Property Delegate With Receiver Type |
| - [`KT-41140`](https://youtrack.jetbrains.com/issue/KT-41140) Unresolved reference to parameter of a catch block from lambda expression on 1.4.0 |
| - [`KT-41150`](https://youtrack.jetbrains.com/issue/KT-41150) IllegalStateException: Couldn't obtain compiled function body for public final inline fun |
| - [`KT-41164`](https://youtrack.jetbrains.com/issue/KT-41164) NI: "IllegalStateException: Error type encountered" with callbackFlow builder inside condition |
| - [`KT-41202`](https://youtrack.jetbrains.com/issue/KT-41202) Type inference fails in 1.4.0 |
| - [`KT-41218`](https://youtrack.jetbrains.com/issue/KT-41218) HMPP: arrayList declarations are visible both from stdlib-common and stdlib-jvm and lead to false-positive resolution ambiguity in IDE |
| - [`KT-41308`](https://youtrack.jetbrains.com/issue/KT-41308) 1.4.0 Type inference regression in suspend blocks with elvis operator expressions |
| - [`KT-41357`](https://youtrack.jetbrains.com/issue/KT-41357) ClassCastException for unstable smart cast on a property call receiver |
| - [`KT-41386`](https://youtrack.jetbrains.com/issue/KT-41386) NI: Type mismatch with generic type parameters |
| - [`KT-41426`](https://youtrack.jetbrains.com/issue/KT-41426) Operator compareTo is not called with nullable type |
| - [`KT-41430`](https://youtrack.jetbrains.com/issue/KT-41430) Broken choosing overload by lambda return type inside builder inference |
| - [`KT-41470`](https://youtrack.jetbrains.com/issue/KT-41470) Wrong nullability assertion is generated when using the BuilderInference annotation |
| - [`KT-41482`](https://youtrack.jetbrains.com/issue/KT-41482) Add a fallback compiler flag to disable the unified null checks behavior |
| |
| ### IDE |
| |
| - [`KT-41325`](https://youtrack.jetbrains.com/issue/KT-41325) SOE in IDEKotlinAsJavaSupport |
| - [`KT-41390`](https://youtrack.jetbrains.com/issue/KT-41390) Typo: equals & hashCode are written with the first uppercase letter |
| |
| ### IDE. Code Style, Formatting |
| |
| - [`KT-41314`](https://youtrack.jetbrains.com/issue/KT-41314) Formatter: Frequent freezes when reformatting code (TrailingCommaPostFormatProcessor) |
| |
| ### IDE. Debugger |
| |
| - [`KT-40417`](https://youtrack.jetbrains.com/issue/KT-40417) Coroutines Debugger: “No coroutine information found” in case of main() entry-point without explicit debug-artifact |
| |
| ### IDE. Gradle. Script |
| |
| - [`KT-39542`](https://youtrack.jetbrains.com/issue/KT-39542) EA-218043: java.util.NoSuchElementException: No element of given type found (GradleBuildRootsManager) |
| - [`KT-41283`](https://youtrack.jetbrains.com/issue/KT-41283) Gradle scripts unable to support 1.4 language level features yet |
| |
| ### IDE. Inspections and Intentions |
| |
| - [`KT-41264`](https://youtrack.jetbrains.com/issue/KT-41264) Disable “Redundant inner modifier” in 1.4.10 |
| - [`KT-41395`](https://youtrack.jetbrains.com/issue/KT-41395) Inspection description misses a space (needs to be lowercase) |
| |
| ### IDE. REPL |
| |
| - [`KT-40898`](https://youtrack.jetbrains.com/issue/KT-40898) REPL: "IllegalAccessError: tried to access field" caused by log4j |
| |
| ### IDE. Wizards |
| |
| - [`KT-38921`](https://youtrack.jetbrains.com/issue/KT-38921) New project wizard: Backend/Console applications template with Groovy DSL generates build.gradle with KotlinCompile instead of compileKotlin |
| |
| ### JavaScript |
| |
| - [`KT-38059`](https://youtrack.jetbrains.com/issue/KT-38059) Support arrays passed as named arguments to varargs |
| - [`KT-40964`](https://youtrack.jetbrains.com/issue/KT-40964) KJS / IR: don't generate "import" (short names) for external interfaces |
| - [`KT-41081`](https://youtrack.jetbrains.com/issue/KT-41081) KJS IR: nativeGetter, nativeSetter, nativeInvoke are not supported |
| |
| ### Libraries |
| |
| - [`KT-41320`](https://youtrack.jetbrains.com/issue/KT-41320) Actual kotlin.test annotation typealiases are inaccessible in modular environment |
| |
| ### Middle-end. IR |
| |
| - [`KT-41324`](https://youtrack.jetbrains.com/issue/KT-41324) IR: "Compilation failed: null" caused by StackOverflowError in compiler in multi-module project |
| |
| ### Native. C and ObjC Import |
| |
| - [`KT-39762`](https://youtrack.jetbrains.com/issue/KT-39762) cinterop on 1.4-M2 doesn't include @Deprecated Kotlin declaration for C declaration it fails to import |
| |
| ### Native. ObjC Export |
| |
| - [`KT-39206`](https://youtrack.jetbrains.com/issue/KT-39206) New line characters in @Deprecated annotation cause syntax error in Kotlin/native exported header |
| - [`KT-40976`](https://youtrack.jetbrains.com/issue/KT-40976) "Unrecognized selector sent to instance" exception invoking suspending lambda from Swift in Native iOS project |
| |
| ### Reflection |
| |
| - [`KT-40842`](https://youtrack.jetbrains.com/issue/KT-40842) "AssertionError: Built-in class kotlin.Any is not found" on java modular run |
| |
| ### Tools. Compiler Plugins |
| |
| - [`KT-41321`](https://youtrack.jetbrains.com/issue/KT-41321) Upgrading to 1.4.0 fails compiling native with <x> is not bound error |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-41083`](https://youtrack.jetbrains.com/issue/KT-41083) Transitive dependency on an MPP with host-specific source sets fails to resolve: "Couldn't resolve metadata artifact..." |
| |
| ### Tools. Gradle. Native |
| |
| - [`KT-40834`](https://youtrack.jetbrains.com/issue/KT-40834) Cannot build Kotlin Multiplatform project on Windows 10 64-bit when the Cocoapods plugin is applied |
| |
| ### Tools. Scripts |
| |
| - [`KT-35925`](https://youtrack.jetbrains.com/issue/KT-35925) REPL: Springboot autoconfiguration problem (META-INF/spring.factories not found ?) |
| |
| ### Tools. kapt |
| |
| - [`KT-41313`](https://youtrack.jetbrains.com/issue/KT-41313) kapt 1.4.0 throws "ZipException: zip END header not found", when Graal SVM jar in classpath |
| |
| |
| ## 1.4.0 |
| |
| ### Compiler |
| |
| #### New Features |
| |
| - [`KT-23729`](https://youtrack.jetbrains.com/issue/KT-23729) Provide a way to generate JVM default method bodies in interfaces delegating to DefaultImpls |
| - [`KT-30330`](https://youtrack.jetbrains.com/issue/KT-30330) Introduce KotlinNothingValueException and throw it instead of NPE on expressions of type Nothing |
| - [`KT-38435`](https://youtrack.jetbrains.com/issue/KT-38435) Support suspend conversion on callable references in JVM backend |
| |
| #### Fixes |
| |
| - [`KT-35483`](https://youtrack.jetbrains.com/issue/KT-35483) NI: compatibility mode |
| - [`KT-39728`](https://youtrack.jetbrains.com/issue/KT-39728) Declarations from `kotlin.reflect` resolved to expect-classes even in JVM modules in IDE |
| - [`KT-40153`](https://youtrack.jetbrains.com/issue/KT-40153) REPL IDE services completion fails on imports completion |
| - [`KT-40404`](https://youtrack.jetbrains.com/issue/KT-40404) Mixed named/positional arguments: argument can be passed twice |
| - [`KT-40544`](https://youtrack.jetbrains.com/issue/KT-40544) NI: "TYPE_MISMATCH: Required: MutableList<out T!> Found: List<T>" caused by Java interface function |
| - [`KT-40555`](https://youtrack.jetbrains.com/issue/KT-40555) NI: Spread operator allows inferred nullable types |
| - [`KT-40646`](https://youtrack.jetbrains.com/issue/KT-40646) NI: TYPE_MISMATCH: "inferred type is Unit but Observer<T> was expected" caused by LieData.observe inference |
| - [`KT-40691`](https://youtrack.jetbrains.com/issue/KT-40691) False positive CAPTURED_VAL_INITIALIZATION with EXACTLY_ONCE contract |
| - [`KT-40693`](https://youtrack.jetbrains.com/issue/KT-40693) UnsupportedOperationException: no descriptor for type constructor of (CapturedType(out TResult)..CapturedType(out TResult)?) |
| - [`KT-40824`](https://youtrack.jetbrains.com/issue/KT-40824) Usages of a typealias lose nullability and annotations in deserialization |
| - [`KT-40843`](https://youtrack.jetbrains.com/issue/KT-40843) Unhandled exception for suspending methods that return Result type |
| - [`KT-40869`](https://youtrack.jetbrains.com/issue/KT-40869) Recursion computation inside compiler resolve on a correct code |
| - [`KT-40893`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-40919) kotlin.collections.ArrayDeque requires an explicit import when compiling with kotlinc 1.4-RC and -language-version 1.3 |
| - [`KT-40920`](https://youtrack.jetbrains.com/issue/KT-40920) Regression in JvmDefault: incorrect access to missing DefaultImpls on default methods in Java interface overriding Kotlin interface |
| - [`KT-40978`](https://youtrack.jetbrains.com/issue/KT-40978) Prohibit using suspend functions as SAM in fun interfaces |
| |
| ### Docs & Examples |
| |
| - [`KT-35218`](https://youtrack.jetbrains.com/issue/KT-35218) Fix misleading in JavaDoc for `createTempDir`/`createTempFile` |
| - [`KT-36981`](https://youtrack.jetbrains.com/issue/KT-36981) Provide a visual illustration of source sets structure generated by `ios()`, `watchos()`, `tvos()` presets |
| - [`KT-38050`](https://youtrack.jetbrains.com/issue/KT-38050) Language Guide: MPP reference: add sample of language settings for all roots instead of common root only |
| |
| ### IDE |
| |
| - [`KT-30265`](https://youtrack.jetbrains.com/issue/KT-30265) IDE, MPP: False negative TYPE_PARAMETER_AS_REIFIED in common code |
| - [`KT-40494`](https://youtrack.jetbrains.com/issue/KT-40494) UAST: "NoSuchElementException: No element of given type found" with use-site target annotation |
| - [`KT-40639`](https://youtrack.jetbrains.com/issue/KT-40639) Shift IDE plugins updater numbers for Kotlin plugin |
| |
| ### IDE. Code Style, Formatting |
| |
| - [`KT-40636`](https://youtrack.jetbrains.com/issue/KT-40636) Hard freeze on formatter: infinite recursion |
| |
| ### IDE. Gradle Integration |
| |
| - [`KT-30116`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-34552) Deadlock in ScriptDefinitionsManager |
| - [`KT-40675`](https://youtrack.jetbrains.com/issue/KT-40675) Gradle build file is not highlighted until navigating to symbol |
| |
| ### IDE. JS |
| |
| - [`KT-40461`](https://youtrack.jetbrains.com/issue/KT-40461) Create new projects with kotlin.js.generate.executable.default=false |
| |
| ### IDE. Script |
| |
| - [`KT-39547`](https://youtrack.jetbrains.com/issue/KT-39547) Kotlin script support freezes IDEA |
| - [`KT-40242`](https://youtrack.jetbrains.com/issue/KT-40242) gradle.kts: Deadlock in ScriptClassRootsUpdater |
| |
| ### IDE. Wizards |
| |
| - [`KT-36153`](https://youtrack.jetbrains.com/issue/KT-36153) New Project Wizard: provide more referential info on project structure editor screen |
| - [`KT-39904`](https://youtrack.jetbrains.com/issue/KT-39904) New Project wizard 1.4: update Frontend Application to make it run with JS IR |
| - [`KT-40149`](https://youtrack.jetbrains.com/issue/KT-40149) Gradle project wizard: templates for Kotlin/JS are not properly formatted |
| |
| ### JavaScript |
| |
| - [`KT-25859`](https://youtrack.jetbrains.com/issue/KT-25859) JS: support function references to functions with vararg if expected type ends with repeated vararg element type |
| - [`KT-40083`](https://youtrack.jetbrains.com/issue/KT-40083) K/JS-IR: java.lang.IllegalStateException: has not acquired a symbol yet |
| - [`KT-40892`](https://youtrack.jetbrains.com/issue/KT-40892) KJS, IR: Unresolved references on importing classes from kotlinx-nodejs |
| |
| ### Libraries |
| |
| - [`KT-39051`](https://youtrack.jetbrains.com/issue/KT-39051) Libraries native artifacts are published without sources |
| |
| ### Tools. Gradle |
| |
| - [`KT-27816`](https://youtrack.jetbrains.com/issue/KT-27816) Provide a possibility to specify intermediate source sets between platform-agnostic and platform-specific test source sets |
| - [`KT-37720`](https://youtrack.jetbrains.com/issue/KT-37720) Replace ArtifactTransform with TransformAction |
| - [`KT-40559`](https://youtrack.jetbrains.com/issue/KT-40559) Adding the stdlib by default triggers warning in the Android Gradle Plugin |
| |
| ### Tools. Gradle. JS |
| |
| - [`KT-40093`](https://youtrack.jetbrains.com/issue/KT-40093) Incorrect updating version of Kotlin/JS dependencies in package.json |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-27320`](https://youtrack.jetbrains.com/issue/KT-27320) Provide a way to reuse same sources for similar Native target |
| - [`KT-40058`](https://youtrack.jetbrains.com/issue/KT-40058) NPE from mpp gradle plugin on kotlinx.benchmarks |
| |
| ### Tools. Gradle. Native |
| |
| - [`KT-40801`](https://youtrack.jetbrains.com/issue/KT-40801) Gradle CocoaPods integration: Cannot change a framework name |
| |
| |
| ## 1.4-RC |
| |
| ### Backend. Native |
| |
| - [`KT-40209`](https://youtrack.jetbrains.com/issue/KT-40209) java.lang.UnsupportedOperationException: org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl@76484173 |
| - [`KT-40367`](https://youtrack.jetbrains.com/issue/KT-40367) Kotlin/Native-Swift interop (iOS): Array member initialization failing in release builds |
| |
| ### Compiler |
| |
| #### Fixes |
| |
| - [`KT-31025`](https://youtrack.jetbrains.com/issue/KT-31025) Type mismatch when callable reference is resolved with a functional expected type and SAM conversion |
| - [`KT-37388`](https://youtrack.jetbrains.com/issue/KT-37388) Consider relaxing rules about inferring Nothing inside special constructions (if, try, when) |
| - [`KT-37717`](https://youtrack.jetbrains.com/issue/KT-37717) NI: "IllegalStateException: Error type encountered" with @BuilderInference |
| - [`KT-38427`](https://youtrack.jetbrains.com/issue/KT-38427) New inference in branched conditions (if, when) results in odd behavior with inconsistent compiler warnings and runtime errors |
| - [`KT-38899`](https://youtrack.jetbrains.com/issue/KT-38899) NI: False positive IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION leads to NPE |
| - [`KT-39468`](https://youtrack.jetbrains.com/issue/KT-39468) NI: overload resolution ambiguity between functions passing `T` and `Foo<T>` with a contravariant receiver |
| - [`KT-39618`](https://youtrack.jetbrains.com/issue/KT-39618) NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER: unable to infer generic type on @BuilderInference annotated lambda parameter with receiver type |
| - [`KT-39633`](https://youtrack.jetbrains.com/issue/KT-39633) NI: Incorrect type parameter instantiation based on contravariant type argument |
| - [`KT-39691`](https://youtrack.jetbrains.com/issue/KT-39691) NI: Missing SAM conversion for nullable lambda |
| - [`KT-39860`](https://youtrack.jetbrains.com/issue/KT-39860) Make Kotlin binaries publicly available (set KotlinCompilerVersion.IS_PRE_RELEASE = false) |
| - [`KT-39900`](https://youtrack.jetbrains.com/issue/KT-39900) NI: Incorrect type inference in a lambda returning Unit |
| - [`KT-39925`](https://youtrack.jetbrains.com/issue/KT-39925) New JVM default compilation mode doesn't check that JVM target is 1.8 |
| - [`KT-39943`](https://youtrack.jetbrains.com/issue/KT-39943) Write information about all-compatibility mode in metadata |
| - [`KT-39953`](https://youtrack.jetbrains.com/issue/KT-39953) NI: ClassCastException "cannot be cast to java.lang.Void" with if-else in return statement in ANdroid project |
| - [`KT-40045`](https://youtrack.jetbrains.com/issue/KT-40045) NI: lambda’s receiver type isn't inferred properly |
| - [`KT-40057`](https://youtrack.jetbrains.com/issue/KT-40057) NI: provideDelegate org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: wrong bytecode generated for static initializer |
| - [`KT-40060`](https://youtrack.jetbrains.com/issue/KT-40060) NI: postponed variable from the builder inference flows to back-end and leads to throw an exception |
| - [`KT-40112`](https://youtrack.jetbrains.com/issue/KT-40112) Kotlin Gradle DSL: COMPATIBILITY_WARNING on `kotlin.sourceSets` block |
| - [`KT-40113`](https://youtrack.jetbrains.com/issue/KT-40113) Kotlin Gradle DSL: "Expression 'main' cannot be invoked as a function" for `distributions.main` DSL block |
| - [`KT-40128`](https://youtrack.jetbrains.com/issue/KT-40128) Introduce compiler key to disable compatibility resolution mechanism for new inference features |
| - [`KT-40151`](https://youtrack.jetbrains.com/issue/KT-40151) NI: postponed variable isn't substituted for top-level CR inside builder inference |
| - [`KT-40214`](https://youtrack.jetbrains.com/issue/KT-40214) AbstractMethodError in gradle subplugin which is used in Android app |
| - [`KT-40234`](https://youtrack.jetbrains.com/issue/KT-40234) Deprecation level "hidden" has no effect on callable reference argument |
| - [`KT-40247`](https://youtrack.jetbrains.com/issue/KT-40247) NI: false positive "function should be called from coroutine or another suspend function" for suspend invoke operator in try-catch |
| - [`KT-40254`](https://youtrack.jetbrains.com/issue/KT-40254) Rewrite at slice with two callable reference arguments |
| - [`KT-40269`](https://youtrack.jetbrains.com/issue/KT-40269) NI: "disabled Unit conversions" error has appeared on green code |
| - [`KT-40337`](https://youtrack.jetbrains.com/issue/KT-40337) NI: false positive "function should be called from coroutine or another suspend function" for suspend invoke operator in `when` block |
| - [`KT-40406`](https://youtrack.jetbrains.com/issue/KT-40406) Prohibit reflection on adapted callable references |
| |
| ### IDE |
| |
| - [`KT-39968`](https://youtrack.jetbrains.com/issue/KT-39968) Paths in KotlinJavaRuntime library aren't updated after you run IDE from a different directory |
| - [`KT-39989`](https://youtrack.jetbrains.com/issue/KT-39989) NullPointerException when opening Kotlin facets in Project Structure dialog in IDEA 192 |
| - [`KT-40311`](https://youtrack.jetbrains.com/issue/KT-40311) Create change_notes for 1.4 in IDE plugin description |
| |
| ### IDE. Debugger |
| |
| - [`KT-39808`](https://youtrack.jetbrains.com/issue/KT-39808) (CoroutineDebugger) Doesn't start with kotlinx-coroutines-core >= 1.3.6 |
| - [`KT-40073`](https://youtrack.jetbrains.com/issue/KT-40073) (CoroutineDebugger) Change minimum supported kotlinx.coroutines version to 1.3.8* |
| - [`KT-40172`](https://youtrack.jetbrains.com/issue/KT-40172) Restored frame variables isn't shown for suspended coroutines |
| - [`KT-40635`](https://youtrack.jetbrains.com/issue/KT-40635) Coroutines Debugger: make IDE plugin accept coroutines 1.3.8-rc* versions as well |
| |
| ### IDE. Gradle Integration |
| |
| - [`KT-38744`](https://youtrack.jetbrains.com/issue/KT-38744) No dependency between Android `test` and commonTest source sets with kotlin.mpp.enableGranularSourceSetsMetadata=true |
| - [`KT-39037`](https://youtrack.jetbrains.com/issue/KT-39037) 'None of the consumable configurations have attributes' in MPP IDE import with transitive project dependency on self |
| |
| ### IDE. Gradle. Script |
| |
| - [`KT-31137`](https://youtrack.jetbrains.com/issue/KT-31137) IntelliJ would get very slow when editing gradle buildSrc(using the kotlin dsl) |
| - [`KT-36078`](https://youtrack.jetbrains.com/issue/KT-36078) Gradle Kotlin script context is not reloaded when gradle/wrapper/gradle-wrapper.properties file is changed |
| - [`KT-39317`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-28662) Inspection to flag usage of the wrong Transient annotation on Kotlin Serializable class |
| - [`KT-34209`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-36131) Suggest to add a missing module dependency on an unresolved reference in Kotlin code |
| - [`KT-37462`](https://youtrack.jetbrains.com/issue/KT-37462) Add "Add dependency to module" quickfix in multimodule Maven project |
| - [`KT-39869`](https://youtrack.jetbrains.com/issue/KT-39869) Add whole project migration usages of kotlin.browser.* & kotlin.dom.* to kotlinx.browser.* & kotlinx.dom.* respectively |
| |
| ### IDE. Wizards |
| |
| - [`KT-40004`](https://youtrack.jetbrains.com/issue/KT-40004) New Project wizard 1.4+: no `https://dl.bintray.com/kotlin/kotlinx` repository is added for kotlinx-html |
| - [`KT-40037`](https://youtrack.jetbrains.com/issue/KT-40037) New Project wizard: update Ktor version |
| - [`KT-40092`](https://youtrack.jetbrains.com/issue/KT-40092) Wizard: the templates panel on mac OS is too wide |
| - [`KT-40232`](https://youtrack.jetbrains.com/issue/KT-40232) New Wizard: Android Sdk path doesn't have backslash escaping on Windows |
| - [`KT-40371`](https://youtrack.jetbrains.com/issue/KT-40371) New Project Wizard: Frontend Application / Library results in broken run configuration |
| - [`KT-40377`](https://youtrack.jetbrains.com/issue/KT-40377) New Project Wizard: Frontend Application defines NPM dependencies that are unnecessary with Kotlin 1.4-RC+ |
| - [`KT-40378`](https://youtrack.jetbrains.com/issue/KT-40378) New Project Wizard: Frontend Application, Disabling JavaScript test framework has no effect |
| - [`KT-40407`](https://youtrack.jetbrains.com/issue/KT-40407) Wizard: do not add stdlib by default for Gradle projects in wizard |
| |
| ### JS. Tools |
| |
| - [`KT-39984`](https://youtrack.jetbrains.com/issue/KT-39984) Update dukat version in toolchain near to release of 1.4-RC |
| |
| ### JavaScript |
| |
| - [`KT-32186`](https://youtrack.jetbrains.com/issue/KT-32186) Make sure K/JS Reflection API documentation is correct and fix it. |
| - [`KT-37563`](https://youtrack.jetbrains.com/issue/KT-37563) K/JS: stacktrace is not captured for exceptions without primary constructor inherited from Exception/Error |
| - [`KT-37752`](https://youtrack.jetbrains.com/issue/KT-37752) Generated typescript incorrect for constructors of derived classes |
| - [`KT-37883`](https://youtrack.jetbrains.com/issue/KT-37883) KJS: Generated TypeScript uses 'declare' rather than 'export' |
| - [`KT-38771`](https://youtrack.jetbrains.com/issue/KT-38771) JS: support non-reified type parameters in typeOf |
| - [`KT-39873`](https://youtrack.jetbrains.com/issue/KT-39873) Update Kotlin JavaScript wrappers due to NON_EXPORTABLE_TYPE diagnostic introduction |
| - [`KT-40126`](https://youtrack.jetbrains.com/issue/KT-40126) [JS / IR] NPE while compiling interfaces with invoke which is passed as a delegate |
| - [`KT-40216`](https://youtrack.jetbrains.com/issue/KT-40216) KJS / IR: AssertionError caused by an anonymous object in the dependency project |
| |
| ### Libraries |
| |
| - [`KT-33069`](https://youtrack.jetbrains.com/issue/KT-33069) StringBuilder common functions |
| - [`KT-35972`](https://youtrack.jetbrains.com/issue/KT-35972) Add contract to builder functions |
| - [`KT-37101`](https://youtrack.jetbrains.com/issue/KT-37101) Mark following api with DeprecatedSinceKotlin("1.4") |
| - [`KT-38360`](https://youtrack.jetbrains.com/issue/KT-38360) Make sure that JB libraries correctly define their npm deps and republish them (after KT-30619) |
| - [`KT-38817`](https://youtrack.jetbrains.com/issue/KT-38817) 'capitalize' should convert digraphs to title case |
| - [`KT-40168`](https://youtrack.jetbrains.com/issue/KT-40168) Remove StringBuilder.capacity from common and JS parts |
| |
| ### Middle-end. IR |
| |
| - [`KT-40520`](https://youtrack.jetbrains.com/issue/KT-40520) Assert during fake-override generation |
| |
| ### Tools. Commonizer |
| |
| - [`KT-40199`](https://youtrack.jetbrains.com/issue/KT-40199) Commonizer loses nullability of abbreviated types |
| |
| ### Tools. Compiler Plugins |
| |
| - [`KT-40036`](https://youtrack.jetbrains.com/issue/KT-40036) Add diagnostic that shows is serialization plugin compatible with serialization-runtime |
| |
| ### Tools. Gradle |
| |
| - [`KT-39755`](https://youtrack.jetbrains.com/issue/KT-39755) [KJS / Gradle / Legacy mode] Directory with whitespace is not processed |
| - [`KT-39809`](https://youtrack.jetbrains.com/issue/KT-39809) Kotlin Gradle plugin: ServiceConfigurationError: org.jetbrains.kotlin.gradle.plugin.KotlinGradleSubplugin: Provider org.jetbrains.kotlin.gradle.internal.AndroidSubplugin not a subtype |
| - [`KT-39977`](https://youtrack.jetbrains.com/issue/KT-39977) Collect statistics of used -Xjvm-default options |
| - [`KT-40300`](https://youtrack.jetbrains.com/issue/KT-40300) Fail the build if in MPP plugin no targets configured |
| |
| ### Tools. Gradle. JS |
| |
| - [`KT-38170`](https://youtrack.jetbrains.com/issue/KT-38170) Investigate how to improve migration experience from pre 1.4.0 DSL to the new one |
| - [`KT-39654`](https://youtrack.jetbrains.com/issue/KT-39654) Default CSS settings in webpack has priority over user's settings |
| - [`KT-39842`](https://youtrack.jetbrains.com/issue/KT-39842) Kotlin/JS Gradle DSL: peerNpm dependency fails |
| - [`KT-40048`](https://youtrack.jetbrains.com/issue/KT-40048) [Gradle, JS] Deprecate kotlin-frontend plugin |
| - [`KT-40067`](https://youtrack.jetbrains.com/issue/KT-40067) [Gradle, JS] Public package.json for mixed JS/TS project |
| - [`KT-40210`](https://youtrack.jetbrains.com/issue/KT-40210) Fail the build when Kotlin/JS target is not (properly) configured |
| - [`KT-40320`](https://youtrack.jetbrains.com/issue/KT-40320) Gradle JS: make migration to the new Gradle DSL smoother |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-32239`](https://youtrack.jetbrains.com/issue/KT-32239) Custom configurations inside Kotlin JVM Gradle projects can't properly resolve multiplatform dependencies |
| - [`KT-39897`](https://youtrack.jetbrains.com/issue/KT-39897) [Commonizer] Fast-pass for library fragments absent for some targets |
| |
| ### Tools. J2K |
| |
| - [`KT-39739`](https://youtrack.jetbrains.com/issue/KT-39739) J2K: Access is allowed from event dispatch thread with IW lock only |
| |
| ### Tools. kapt |
| |
| - [`KT-34604`](https://youtrack.jetbrains.com/issue/KT-34604) KAPT: Flaky NPE through `org.jetbrains.kotlin.kapt3.base.ProcessorLoader.doLoadProcessors` |
| - [`KT-36302`](https://youtrack.jetbrains.com/issue/KT-36302) TypeTreeVisitor.visitMemberSelect IllegalStateException: node.sym must not be null on JDK 11 |
| - [`KT-39876`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-23575) Deprecate with replacement and SinceKotlin |
| - [`KT-38652`](https://youtrack.jetbrains.com/issue/KT-38652) Do not generate optional annotations to class files on JVM |
| - [`KT-38777`](https://youtrack.jetbrains.com/issue/KT-38777) Hide Throwable.addSuppressed member and prefer extension instead |
| |
| #### Performance Improvements |
| |
| - [`KT-38489`](https://youtrack.jetbrains.com/issue/KT-38489) Compilation of kotlin html DSL increasingly slow |
| - [`KT-28650`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-15971) Incorrect bytecode generated when inheriting default arguments not from the first supertype |
| - [`KT-25290`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-28672) Contracts on calls with implicit receivers |
| - [`KT-30279`](https://youtrack.jetbrains.com/issue/KT-30279) Support non-reified type parameters in typeOf |
| - [`KT-31908`](https://youtrack.jetbrains.com/issue/KT-31908) NI: CCE on passing lambda to function which accepts vararg SAM interface |
| - [`KT-32156`](https://youtrack.jetbrains.com/issue/KT-32156) New inference issue with generics |
| - [`KT-32229`](https://youtrack.jetbrains.com/issue/KT-32229) New inference algorithm not taking into account the upper bound class |
| - [`KT-33455`](https://youtrack.jetbrains.com/issue/KT-33455) Override equals/hashCode in functional interface wrappers |
| - [`KT-34902`](https://youtrack.jetbrains.com/issue/KT-34902) AnalyzerException: Argument 1: expected I, but found R for unsigned types in generic data class |
| - [`KT-35075`](https://youtrack.jetbrains.com/issue/KT-35075) AssertionError: "No resolved call for ..." with conditional function references |
| - [`KT-35468`](https://youtrack.jetbrains.com/issue/KT-35468) Overcome ambiguity between typealias kotlin.Throws and the aliased type kotlin.jvm.Throws |
| - [`KT-35494`](https://youtrack.jetbrains.com/issue/KT-35494) NI: Multiple duplicate error diagnostics (in IDE popup) with NULL_FOR_NONNULL_TYPE |
| - [`KT-35681`](https://youtrack.jetbrains.com/issue/KT-35681) Wrong common supertype between raw and integer literal type leads to unsound code |
| - [`KT-35937`](https://youtrack.jetbrains.com/issue/KT-35937) Error "Declaration has several compatible actuals" on incremental build |
| - [`KT-36013`](https://youtrack.jetbrains.com/issue/KT-36013) Functional interface conversion not happens on a value of functional type with smart cast to a relevant functional type |
| - [`KT-36045`](https://youtrack.jetbrains.com/issue/KT-36045) Do not depend on the order of lambda arguments to coerce result to `Unit` |
| - [`KT-36448`](https://youtrack.jetbrains.com/issue/KT-36448) NI: fix tests after enabling NI in the compiler |
| - [`KT-36706`](https://youtrack.jetbrains.com/issue/KT-36706) Prohibit functional interface constructor references |
| - [`KT-36969`](https://youtrack.jetbrains.com/issue/KT-36969) Generate @NotNull on instance parameters of Interface$DefaultImpls methods |
| - [`KT-37058`](https://youtrack.jetbrains.com/issue/KT-37058) Incorrect overload resolution ambiguity on callable reference in a conditional expression with new inference |
| - [`KT-37120`](https://youtrack.jetbrains.com/issue/KT-37120) [FIR] False UNRESOLVED_REFERENCE for public and protected member functions and properties which are declared in object inner class |
| - [`KT-37149`](https://youtrack.jetbrains.com/issue/KT-37149) Conversion when generic specified by type argument of SAM type |
| - [`KT-37249`](https://youtrack.jetbrains.com/issue/KT-37249) false TYPE_MISMATCH when When-expression branches have try-catch blocks |
| - [`KT-37341`](https://youtrack.jetbrains.com/issue/KT-37341) NI: Type mismatch with combination of lambda and function reference |
| - [`KT-37436`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-37510) NI infers `java.lang.Void` from the expression in a lazy property delegate and throws ClassCastException at runtime |
| - [`KT-37541`](https://youtrack.jetbrains.com/issue/KT-37541) SAM conversion with fun interface without a function fails on compiling and IDE analysis in SamAdapterFunctionsScope.getSamConstructor() |
| - [`KT-37574`](https://youtrack.jetbrains.com/issue/KT-37574) NI: Type mismatch with Kotlin object extending functional type passed as @FunctionalInterface to Java |
| - [`KT-37630`](https://youtrack.jetbrains.com/issue/KT-37630) NI: ILT suitability in a call is broken if there are CST calculation and calling function's type parameters |
| - [`KT-37665`](https://youtrack.jetbrains.com/issue/KT-37665) NI: applicability error due to implicitly inferred Nothing for returning T with expected type |
| - [`KT-37712`](https://youtrack.jetbrains.com/issue/KT-37712) No extension receiver in functional interface created with lambda |
| - [`KT-37715`](https://youtrack.jetbrains.com/issue/KT-37715) NI: VerifyError: Bad type on operand stack with varargs generic value when type is inferred |
| - [`KT-37721`](https://youtrack.jetbrains.com/issue/KT-37721) NI: Function reference with vararg parameter treated as array and missing default parameter is rejected |
| - [`KT-37887`](https://youtrack.jetbrains.com/issue/KT-37887) NI: Smart casting for Map doesn't work if the variable is already "smart casted" |
| - [`KT-37914`](https://youtrack.jetbrains.com/issue/KT-37914) NI: broken inference for a casting to subtype function within the common constraint system with this subtype |
| - [`KT-37952`](https://youtrack.jetbrains.com/issue/KT-37952) NI: improve lambdas completion through separation the lambdas analysis into several steps |
| - [`KT-38069`](https://youtrack.jetbrains.com/issue/KT-38069) Callable reference adaptation should have dependency on API version 1.4 |
| - [`KT-38143`](https://youtrack.jetbrains.com/issue/KT-38143) New type inference fails when calling extension function defined on generic type with type arguments nested too deep |
| - [`KT-38156`](https://youtrack.jetbrains.com/issue/KT-38156) FIR Metadata generation |
| - [`KT-38197`](https://youtrack.jetbrains.com/issue/KT-38197) java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects |
| - [`KT-38259`](https://youtrack.jetbrains.com/issue/KT-38259) NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER for provideDelegate |
| - [`KT-38337`](https://youtrack.jetbrains.com/issue/KT-38337) Map delegation fails for inline classes |
| - [`KT-38401`](https://youtrack.jetbrains.com/issue/KT-38401) FIR: protected effective visibility is handled unprecisely |
| - [`KT-38416`](https://youtrack.jetbrains.com/issue/KT-38416) FIR: infinite loop in BB coroutine test 'overrideDefaultArgument.kt' |
| - [`KT-38432`](https://youtrack.jetbrains.com/issue/KT-38432) FIR: incorrect effective visibility in anonymous object |
| - [`KT-38434`](https://youtrack.jetbrains.com/issue/KT-38434) Implement resolution of suspend-conversion on FE only, but give error if suspend conversion is called |
| - [`KT-38437`](https://youtrack.jetbrains.com/issue/KT-38437) [FIR] String(CharArray) is resolved to java.lang.String constructor instead of kotlin.text.String pseudo-constructor |
| - [`KT-38439`](https://youtrack.jetbrains.com/issue/KT-38439) NI: anonymous functions without receiver is allowed if there is an expected type with receiver |
| - [`KT-38473`](https://youtrack.jetbrains.com/issue/KT-38473) FIR: ConeIntegerLiteralType in signature |
| - [`KT-38537`](https://youtrack.jetbrains.com/issue/KT-38537) IllegalArgumentException: "marginPrefix must be non-blank string" with raw strings and space as margin prefix in trimMargin() call |
| - [`KT-38604`](https://youtrack.jetbrains.com/issue/KT-38604) Implicit suspend conversion on call arguments doesn't work on vararg elements |
| - [`KT-38680`](https://youtrack.jetbrains.com/issue/KT-38680) NSME when calling generic interface method with default parameters overriden with inline class type argument |
| - [`KT-38681`](https://youtrack.jetbrains.com/issue/KT-38681) Wrong bytecode generated when calling generic interface method with default parameters overriden with primitive type argument |
| - [`KT-38691`](https://youtrack.jetbrains.com/issue/KT-38691) NI: overload resolution ambiguity if take `R` and `() -> R`, and pass literal lambda, which returns `R` |
| - [`KT-38799`](https://youtrack.jetbrains.com/issue/KT-38799) False positive USELESS_CAST for lambda parameter |
| - [`KT-38802`](https://youtrack.jetbrains.com/issue/KT-38802) Generated code crashes by ClassCastException when delegating with inline class |
| - [`KT-38853`](https://youtrack.jetbrains.com/issue/KT-38853) Backend Internal error: Error type encountered: Unresolved type for nested class used in an annotation argument on an interface method |
| - [`KT-38890`](https://youtrack.jetbrains.com/issue/KT-38890) NI: false negative Type mismatch for values with fun keyword |
| - [`KT-39010`](https://youtrack.jetbrains.com/issue/KT-39010) NI: Regression with false-positive smartcast on var of generic type |
| - [`KT-39013`](https://youtrack.jetbrains.com/issue/KT-39013) 202, ASM 8: "AnalyzerException: Execution can fall off the end of the code" |
| - [`KT-39260`](https://youtrack.jetbrains.com/issue/KT-39260) "AssertionError: Unsigned type expected: Int" in range |
| - [`KT-39305`](https://youtrack.jetbrains.com/issue/KT-39305) NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER: unable to infer deeply nested type bound when class implements generic interface |
| - [`KT-39408`](https://youtrack.jetbrains.com/issue/KT-39408) Using unsigned arrays as generics fails in 1.4-M2 with class cast exception |
| - [`KT-39533`](https://youtrack.jetbrains.com/issue/KT-39533) NI: Wrong overload resolution for methods with SAM converted function reference arguments |
| - [`KT-39535`](https://youtrack.jetbrains.com/issue/KT-39535) NI: Inference fails for the parameters of SAM converted lambdas with type parameters |
| - [`KT-39603`](https://youtrack.jetbrains.com/issue/KT-39603) Require explicit override in JVM default compatibility mode on implicit generic specialization of inherited methods in classes |
| - [`KT-39671`](https://youtrack.jetbrains.com/issue/KT-39671) Couldn't inline method call 'expectBody' |
| - [`KT-39816`](https://youtrack.jetbrains.com/issue/KT-39816) NI:ClassCastException and no IDE error with provideDelegate when DELEGATE_SPECIAL_FUNCTION_MISSING in OI |
| - [`KT-32779`](https://youtrack.jetbrains.com/issue/KT-32779) `Rewrite at slice` in array access resolution in coroutine inference |
| - [`KT-39387`](https://youtrack.jetbrains.com/issue/KT-39387) Can't build Kotlin project due to overload resolution ambiguity on flatMap calls |
| - [`KT-39229`](https://youtrack.jetbrains.com/issue/KT-39229) NI: resolution to wrong candidate (SAM-type against similar functional type) |
| |
| ### Docs & Examples |
| |
| - [`KT-36245`](https://youtrack.jetbrains.com/issue/KT-36245) Document that @kotlin.native.ThreadLocal annotation doesn't work anywhere except in Kotlin/Native |
| - [`KT-37943`](https://youtrack.jetbrains.com/issue/KT-37943) Conflicting overloads in the factory functions sample code in Coding Conventions Page |
| |
| ### IDE |
| |
| #### New Features |
| |
| - [`KT-10974`](https://youtrack.jetbrains.com/issue/KT-10974) Add Code Style: Import Layout Configuration Table |
| - [`KT-39065`](https://youtrack.jetbrains.com/issue/KT-39065) "Join lines" should remove trailing comma on call site |
| |
| #### Fixes |
| |
| - [`KT-9065`](https://youtrack.jetbrains.com/issue/KT-9065) Wrong result when move statement through if block with call with lambda |
| - [`KT-14757`](https://youtrack.jetbrains.com/issue/KT-14757) Move statement up breaks code in function parameter list |
| - [`KT-14946`](https://youtrack.jetbrains.com/issue/KT-14946) Move statement up/down (with Ctrl+Shift+Up/Down) messes with empty lines |
| - [`KT-15143`](https://youtrack.jetbrains.com/issue/KT-15143) Kotlin: Colors&Fonts -> "Enum entry" should use Language Default -> Classes - Static field |
| - [`KT-17887`](https://youtrack.jetbrains.com/issue/KT-17887) Moving statement (Ctrl/Cmd+Shift+Down) messes with use block |
| - [`KT-34187`](https://youtrack.jetbrains.com/issue/KT-34187) UAST cannot get type of array access |
| - [`KT-34524`](https://youtrack.jetbrains.com/issue/KT-34524) "PSI and index do not match" and IDE freeze with library import from `square/workflow` |
| - [`KT-35574`](https://youtrack.jetbrains.com/issue/KT-35574) UAST: UBreakExpression in when expression should be UYieldExpression |
| - [`KT-36801`](https://youtrack.jetbrains.com/issue/KT-36801) IDE: Unsupported language version value is represented with "latest stable" in GUI |
| - [`KT-37378`](https://youtrack.jetbrains.com/issue/KT-37378) Remove IDE option "Enable new type inference algorithm..." in 1.4 |
| - [`KT-38003`](https://youtrack.jetbrains.com/issue/KT-38003) "Analyze Data Flow from Here" should work on parameter of abstract method |
| - [`KT-38173`](https://youtrack.jetbrains.com/issue/KT-38173) Reified types do no have extends information |
| - [`KT-38217`](https://youtrack.jetbrains.com/issue/KT-38217) Make Kotlin plugin settings searchable |
| - [`KT-38247`](https://youtrack.jetbrains.com/issue/KT-38247) "IncorrectOperationException: Incorrect expression" through UltraLightUtils.kt: inlined string is not escaped before parsing |
| - [`KT-38293`](https://youtrack.jetbrains.com/issue/KT-38293) Throwable: "'codestyle.name.kotlin' is not found in java.util.PropertyResourceBundle" at KotlinLanguageCodeStyleSettingsProvider.getConfigurableDisplayName() |
| - [`KT-38407`](https://youtrack.jetbrains.com/issue/KT-38407) Drop components from plugin.xml |
| - [`KT-38443`](https://youtrack.jetbrains.com/issue/KT-38443) No error on change in property initializer |
| - [`KT-38521`](https://youtrack.jetbrains.com/issue/KT-38521) ISE: Loop in parent structure when converting a DOT_QUALIFIED_EXPRESSION with parent ANNOTATED_EXPRESSION |
| - [`KT-38571`](https://youtrack.jetbrains.com/issue/KT-38571) Rework deprecated EPs |
| - [`KT-38632`](https://youtrack.jetbrains.com/issue/KT-38632) Change the code style to official in tests |
| |
| ### IDE. Code Style, Formatting |
| |
| #### Fixes |
| |
| - [`KT-24750`](https://youtrack.jetbrains.com/issue/KT-24750) Formatter: Minimum blank lines after class header does nothing |
| - [`KT-31169`](https://youtrack.jetbrains.com/issue/KT-31169) IDEA settings search fails to find "Tabs and Indents" tab in Kotlin code style settings |
| - [`KT-35359`](https://youtrack.jetbrains.com/issue/KT-35359) Incorrect indent for multiline expression in string template |
| - [`KT-37420`](https://youtrack.jetbrains.com/issue/KT-37420) Add setting to disable inserting empty line between declaration and declaration with comment |
| - [`KT-37891`](https://youtrack.jetbrains.com/issue/KT-37891) Formatter inserts empty lines between annotated properties |
| - [`KT-38036`](https://youtrack.jetbrains.com/issue/KT-38036) Use trailing comma setting does not apply to code example in Settings dialog |
| - [`KT-38568`](https://youtrack.jetbrains.com/issue/KT-38568) False positive: weak warning "Missing line break" on -> in when expression |
| - [`KT-39024`](https://youtrack.jetbrains.com/issue/KT-39024) Add option for blank lines before declaration with comment or annotation on separate line |
| - [`KT-39079`](https://youtrack.jetbrains.com/issue/KT-39079) Trailing comma: add base support for call site |
| - [`KT-39123`](https://youtrack.jetbrains.com/issue/KT-39123) Option `Align 'when' branches in columns` does nothing |
| - [`KT-39180`](https://youtrack.jetbrains.com/issue/KT-39180) Move trailing comma settings in Other tab |
| |
| ### IDE. Completion |
| |
| - [`KT-18538`](https://youtrack.jetbrains.com/issue/KT-18538) Completion of static members of grand-super java class inserts unnecessary qualifier |
| - [`KT-38445`](https://youtrack.jetbrains.com/issue/KT-38445) Fully qualified class name is used instead after insertion of `delay` method |
| |
| ### IDE. Debugger |
| |
| #### Fixes |
| |
| - [`KT-14057`](https://youtrack.jetbrains.com/issue/KT-14057) Debugger couldn't step into Reader.read |
| - [`KT-14828`](https://youtrack.jetbrains.com/issue/KT-14828) Bad step into/over behavior for functions with default parameters |
| - [`KT-36403`](https://youtrack.jetbrains.com/issue/KT-36403) Method breakpoints don't work for libraries |
| - [`KT-36404`](https://youtrack.jetbrains.com/issue/KT-36404) Evaluate: "AssertionError: Argument expression is not saved for a SAM constructor" |
| - [`KT-37486`](https://youtrack.jetbrains.com/issue/KT-37486) Kotlin plugin keeps reference to stream debugger support classes after stream debugger plugin is disabled |
| - [`KT-38484`](https://youtrack.jetbrains.com/issue/KT-38484) Coroutines Debugger: IAE “Requested element count -1 is less than zero.” is thrown by calling dumpCoroutines |
| - [`KT-38606`](https://youtrack.jetbrains.com/issue/KT-38606) Coroutine Debugger: OCE from org.jetbrains.kotlin.idea.debugger.coroutine.proxy.mirror.BaseMirror.isCompatible |
| - [`KT-39143`](https://youtrack.jetbrains.com/issue/KT-39143) NPE on setCurrentStackFrame to Kotlin inner compiled class content |
| - [`KT-39412`](https://youtrack.jetbrains.com/issue/KT-39412) Failed to find Premain-Class manifest attribute when debugging main method with ktor |
| - [`KT-39634`](https://youtrack.jetbrains.com/issue/KT-39634) (CoroutineDebugger) Agent doesn't start if using kotlinx-coroutines-core only dependency |
| - [`KT-39648`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-39059) Poor performance of `modifyDependenciesOnMppModules` |
| |
| #### Fixes |
| |
| - [`KT-35921`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-36673) Gradle Project importing: move ModelBuilders and ModelProviders to kotlin-gradle-tooling jar |
| - [`KT-36792`](https://youtrack.jetbrains.com/issue/KT-36792) IDEA 2020.1: Some module->module dependencies in HMPP project are missed after import from Gradle |
| - [`KT-37125`](https://youtrack.jetbrains.com/issue/KT-37125) Imported modules structure for MPP project is displayed messy in UI in IDEA 2020.1 |
| - [`KT-37428`](https://youtrack.jetbrains.com/issue/KT-37428) NPE at KotlinFacetSettings.setLanguageLevel() on the first project import |
| - [`KT-38706`](https://youtrack.jetbrains.com/issue/KT-38706) IDE Gradle import creates 4 JavaScript modules for MPP source sets with BOTH compiler type |
| - [`KT-38767`](https://youtrack.jetbrains.com/issue/KT-38767) Published hierarchical multiplatform library symbols are unresolved in IDE (master) |
| - [`KT-38842`](https://youtrack.jetbrains.com/issue/KT-38842) False positive [INVISIBLE_MEMBER] for `internal` declaration of commonMain called from commonTest |
| - [`KT-39213`](https://youtrack.jetbrains.com/issue/KT-39213) IDE: references from MPP project to JavaScript library are unresolved, when project and library are compiled with "both" mode |
| - [`KT-39657`](https://youtrack.jetbrains.com/issue/KT-39657) Language settings for intermediate source-sets are lost during import |
| |
| ### IDE. Gradle. Script |
| |
| #### New Features |
| |
| - [`KT-34481`](https://youtrack.jetbrains.com/issue/KT-34481) `*.gradle.kts`: use Intellij IDEA Gradle project sync mechanics for updating script configuration |
| |
| #### Performance Improvements |
| |
| - [`KT-34138`](https://youtrack.jetbrains.com/issue/KT-34138) Deadlock in `ScriptTemplatesFromDependenciesProvider` |
| - [`KT-38875`](https://youtrack.jetbrains.com/issue/KT-38875) Deadlock in ScriptClassRootsUpdater.checkInvalidSdks |
| |
| #### Fixes |
| |
| - [`KT-34265`](https://youtrack.jetbrains.com/issue/KT-34265) Bogus "build configuration failed, run 'gradle tasks' for more information" message and other issues related to "script dependencies" |
| - [`KT-34444`](https://youtrack.jetbrains.com/issue/KT-34444) *.gradle.kts: special storage of all scripts configuration on one file |
| - [`KT-35153`](https://youtrack.jetbrains.com/issue/KT-35153) build.gradle.kts: scripts in removed subproject remain imported, but shouldn't |
| - [`KT-35573`](https://youtrack.jetbrains.com/issue/KT-35573) Request for gradle build script configuration only after explicit click on notification |
| - [`KT-36675`](https://youtrack.jetbrains.com/issue/KT-36675) move .gradle.kts ModelBuilders and ModelProviders to kotlin-gradle-tooling jar |
| - [`KT-37178`](https://youtrack.jetbrains.com/issue/KT-37178) build.gradle.kts: Rework the notification for scripts out of project |
| - [`KT-37631`](https://youtrack.jetbrains.com/issue/KT-37631) Unnecessary loading dependencies after opening build.gradle.kts after project import with Gradle 6 |
| - [`KT-37863`](https://youtrack.jetbrains.com/issue/KT-37863) Scanning dependencies for script definitions takes too long or indefinitely during Gradle import |
| - [`KT-38296`](https://youtrack.jetbrains.com/issue/KT-38296) MISSING_DEPENDENCY_SUPERCLASS in the build.gradle.kts editor while Gradle runs Ok |
| - [`KT-38541`](https://youtrack.jetbrains.com/issue/KT-38541) "Invalid file" exception in ScriptChangeListener.getAnalyzableKtFileForScript() |
| - [`KT-39104`](https://youtrack.jetbrains.com/issue/KT-39104) “Gradle Kotlin DSL script configuration is missing” after importing project in IJ201, Gradle 6.3 |
| - [`KT-39469`](https://youtrack.jetbrains.com/issue/KT-39469) Gradle version is not updated in script dependencies if the version of gradle was changed in gradle-wrapper.properties |
| - [`KT-39771`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-14884) Intention to add missing "class" keyword for enum and annotation top-level declarations |
| - [`KT-17209`](https://youtrack.jetbrains.com/issue/KT-17209) Provide intention to fix platform declaration clash (CONFLICTING_JVM_DECLARATIONS) |
| - [`KT-24522`](https://youtrack.jetbrains.com/issue/KT-24522) Suggest to move typealias outside the class |
| - [`KT-30263`](https://youtrack.jetbrains.com/issue/KT-30263) Detect redundant conversions of unsigned types |
| - [`KT-35893`](https://youtrack.jetbrains.com/issue/KT-35893) Support Inspection for unnecessary asSequence() call |
| - [`KT-38559`](https://youtrack.jetbrains.com/issue/KT-38559) "Change JVM name" (@JvmName) quickfix: improve name suggester for generic functions |
| - [`KT-38597`](https://youtrack.jetbrains.com/issue/KT-38597) Expand Boolean intention |
| - [`KT-38982`](https://youtrack.jetbrains.com/issue/KT-38982) Add "Logger initialized with foreign class" inspection |
| - [`KT-39131`](https://youtrack.jetbrains.com/issue/KT-39131) TrailingCommaInspection: should suggest fixes for call-site without warnings |
| |
| #### Fixes |
| |
| - [`KT-5271`](https://youtrack.jetbrains.com/issue/KT-5271) Missing QuickFix for Multiple supertypes available |
| - [`KT-11865`](https://youtrack.jetbrains.com/issue/KT-11865) "Create secondary constructor" quick fix always inserts parameter-less call to `this()` |
| - [`KT-14021`](https://youtrack.jetbrains.com/issue/KT-14021) Quickfix to add parameter to function gives strange name to parameter |
| - [`KT-17121`](https://youtrack.jetbrains.com/issue/KT-17121) "Implement members" quick fix is not suggested |
| - [`KT-17368`](https://youtrack.jetbrains.com/issue/KT-17368) Don't highlight members annotated with @JsName as unused |
| - [`KT-20795`](https://youtrack.jetbrains.com/issue/KT-20795) "replace explicit parameter with it" creates invalid code in case of overload ambiguities |
| - [`KT-22014`](https://youtrack.jetbrains.com/issue/KT-22014) Intention "convert lambda to reference" should be available for implicit 'this' |
| - [`KT-22015`](https://youtrack.jetbrains.com/issue/KT-22015) Intention "Convert lambda to reference" should be available in spite of the lambda in or out of parentheses |
| - [`KT-22142`](https://youtrack.jetbrains.com/issue/KT-22142) Intentions: "Convert to primary constructor" changes semantics for property with custom setter |
| - [`KT-22878`](https://youtrack.jetbrains.com/issue/KT-22878) Empty argument list at the call site of custom function named "suspend" shouldn't be reported as unnecessary |
| - [`KT-24281`](https://youtrack.jetbrains.com/issue/KT-24281) Importing of invoke() from the same file is reported as unused even if it isn't |
| - [`KT-25050`](https://youtrack.jetbrains.com/issue/KT-25050) False-positive inspection "Call replaceable with binary operator" for 'equals' |
| - [`KT-26361`](https://youtrack.jetbrains.com/issue/KT-26361) @Deprecated "ReplaceWith" quickfix inserts 'this' incorrectly when using function imports |
| - [`KT-27651`](https://youtrack.jetbrains.com/issue/KT-27651) 'Condition is always true' inspection should not be triggered when the condition has references to a named constant |
| - [`KT-29934`](https://youtrack.jetbrains.com/issue/KT-29934) False negative `Change type` quickfix on primary constructor override val parameter when it has wrong type |
| - [`KT-31682`](https://youtrack.jetbrains.com/issue/KT-31682) 'Convert lambda to reference' intention inside class with function which return object produces uncompilable code |
| - [`KT-31760`](https://youtrack.jetbrains.com/issue/KT-31760) Implement Abstract Function/Property intentions position generated member improperly |
| - [`KT-32511`](https://youtrack.jetbrains.com/issue/KT-32511) Create class quick fix is not suggested in super type list in case of missing primary constructor |
| - [`KT-32565`](https://youtrack.jetbrains.com/issue/KT-32565) False positive "Variable is the same as 'credentials' and should be inlined" with object declared and returned from lambda |
| - [`KT-32801`](https://youtrack.jetbrains.com/issue/KT-32801) False positive "Call on collection type may be reduced" with mapNotNull, generic lambda block and new inference |
| - [`KT-33951`](https://youtrack.jetbrains.com/issue/KT-33951) ReplaceWith quickfix with unqualified object member call doesn't substitute argument for parameter |
| - [`KT-34378`](https://youtrack.jetbrains.com/issue/KT-34378) "Convert lambda to reference" refactoring does not work for suspend functions |
| - [`KT-34677`](https://youtrack.jetbrains.com/issue/KT-34677) False positive "Collection count can be converted to size" with `Iterable` |
| - [`KT-34696`](https://youtrack.jetbrains.com/issue/KT-34696) Wrong 'Redundant qualifier name' for 'MyEnum.values' usage |
| - [`KT-34713`](https://youtrack.jetbrains.com/issue/KT-34713) "Condition is always 'false'": quickfix "Delete expression" doesn't remove `else` keyword (may break control flow) |
| - [`KT-35015`](https://youtrack.jetbrains.com/issue/KT-35015) ReplaceWith doesn't substitute parameters with argument expressions |
| - [`KT-35329`](https://youtrack.jetbrains.com/issue/KT-35329) Replace 'when' with 'if' intention: do not suggest if 'when' is used as expression and it has no 'else' branch |
| - [`KT-36194`](https://youtrack.jetbrains.com/issue/KT-36194) "Add braces to 'for' statement" inserts extra line break and moves the following single-line comment |
| - [`KT-36406`](https://youtrack.jetbrains.com/issue/KT-36406) "To ordinary string literal" intention adds unnecessary escapes to characters in template expression |
| - [`KT-36461`](https://youtrack.jetbrains.com/issue/KT-36461) "Create enum constant" quick fix adds after semicolon, if the last entry has a comma |
| - [`KT-36462`](https://youtrack.jetbrains.com/issue/KT-36462) "Create enum constant" quick fix doesn't add trailing comma |
| - [`KT-36508`](https://youtrack.jetbrains.com/issue/KT-36508) False positive "Replace 'to' with infix form" when 'to' lambda generic type argument is specified explicitly |
| - [`KT-36930`](https://youtrack.jetbrains.com/issue/KT-36930) Intention "Specify type explicitly" adds NotNull annotation when calling java method with the annotation |
| - [`KT-37148`](https://youtrack.jetbrains.com/issue/KT-37148) "Remove redundant `.let` call doesn't remove extra calls |
| - [`KT-37156`](https://youtrack.jetbrains.com/issue/KT-37156) "Unused unary operator" inspection highlighting is hard to see |
| - [`KT-37173`](https://youtrack.jetbrains.com/issue/KT-37173) "Replace with string templates" intention for String.format produces uncompilable string template |
| - [`KT-37181`](https://youtrack.jetbrains.com/issue/KT-37181) Don't show "Remove redundant qualifier name" inspection on qualified Companion imported with star import |
| - [`KT-37214`](https://youtrack.jetbrains.com/issue/KT-37214) "Convert lambda to reference" with a labeled "this" receiver fails |
| - [`KT-37256`](https://youtrack.jetbrains.com/issue/KT-37256) False positive `PlatformExtensionReceiverOfInline` inspection if a platform type value is passed to a nullable receiver |
| - [`KT-37744`](https://youtrack.jetbrains.com/issue/KT-37744) "Convert lambda to reference" inspection quick fix create incompilable code when type is inferred from lambda parameter |
| - [`KT-37746`](https://youtrack.jetbrains.com/issue/KT-37746) "Redundant suspend modifier" should not be reported for functions with actual keyword |
| - [`KT-37842`](https://youtrack.jetbrains.com/issue/KT-37842) "Convert to anonymous function" creates broken code with suspend functions |
| - [`KT-37908`](https://youtrack.jetbrains.com/issue/KT-37908) "Convert to anonymous object" quickfix: false negative when interface has concrete functions |
| - [`KT-37967`](https://youtrack.jetbrains.com/issue/KT-37967) Replace 'invoke' with direct call intention adds unnecessary parenthesis |
| - [`KT-37977`](https://youtrack.jetbrains.com/issue/KT-37977) "Replace 'invoke' with direct call" intention: false positive when function is not operator |
| - [`KT-38062`](https://youtrack.jetbrains.com/issue/KT-38062) Reactor Quickfix throws `NotImplementedError` for Kotlin |
| - [`KT-38240`](https://youtrack.jetbrains.com/issue/KT-38240) False positive redundant semicolon with `as` cast and `not` unary operator on next line |
| - [`KT-38261`](https://youtrack.jetbrains.com/issue/KT-38261) Redundant 'let' call removal leaves ?. operator and makes code uncompilable |
| - [`KT-38310`](https://youtrack.jetbrains.com/issue/KT-38310) Remove explicit type annotation intention drops 'suspend' |
| - [`KT-38492`](https://youtrack.jetbrains.com/issue/KT-38492) False positive "Add import" intention for already imported class |
| - [`KT-38520`](https://youtrack.jetbrains.com/issue/KT-38520) SetterBackingFieldAssignmentInspection throws exception |
| - [`KT-38649`](https://youtrack.jetbrains.com/issue/KT-38649) False positive quickfix "Assignment should be lifted out of when" in presence of smartcasts |
| - [`KT-38677`](https://youtrack.jetbrains.com/issue/KT-38677) Invalid psi tree after `Lift assigment out of...` |
| - [`KT-38790`](https://youtrack.jetbrains.com/issue/KT-38790) "Convert sealed subclass to object" for data classes doesn't remove 'data' keyword |
| - [`KT-38829`](https://youtrack.jetbrains.com/issue/KT-38829) 'Remove redundant backticks' can be broken with @ in name |
| - [`KT-38831`](https://youtrack.jetbrains.com/issue/KT-38831) 'Replace with assignment' can be broken with fast code change |
| - [`KT-38832`](https://youtrack.jetbrains.com/issue/KT-38832) "Remove curly braces" intention may produce CCE |
| - [`KT-38948`](https://youtrack.jetbrains.com/issue/KT-38948) False positive quickfix "Make containing function suspend" for anonymous function |
| - [`KT-38961`](https://youtrack.jetbrains.com/issue/KT-38961) "Useless call on collection type" for filterNotNull on non-null array where list return type is expected |
| - [`KT-39069`](https://youtrack.jetbrains.com/issue/KT-39069) Improve TrailingCommaInspection |
| - [`KT-39151`](https://youtrack.jetbrains.com/issue/KT-39151) False positive inspection to replace Java forEach with Kotlin forEach when using ConcurrentHashMap |
| |
| ### IDE. JS |
| |
| - [`KT-39275`](https://youtrack.jetbrains.com/issue/KT-39275) Kotlin JS Browser template for kotlin dsl doesn't include index.html |
| |
| ### IDE. KDoc |
| |
| - [`KT-32163`](https://youtrack.jetbrains.com/issue/KT-32163) Open Quick Documentation when cursor inside function / constructor brackets |
| |
| ### IDE. Navigation |
| |
| - [`KT-32245`](https://youtrack.jetbrains.com/issue/KT-32245) Method in Kotlin class is not listed among implementing methods |
| - [`KT-33510`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-38260) Navigation bar doesn't show directories of files with a single top level Kotlin class |
| - [`KT-38466`](https://youtrack.jetbrains.com/issue/KT-38466) Top level functions/properties aren't shown in navigation panel |
| |
| ### IDE. Project View |
| |
| - [`KT-36444`](https://youtrack.jetbrains.com/issue/KT-36444) Structure view: add ability to sort by visibility |
| - [`KT-38276`](https://youtrack.jetbrains.com/issue/KT-38276) Structure view: support visibility filter for class properties |
| |
| ### IDE. REPL |
| |
| - [`KT-38454`](https://youtrack.jetbrains.com/issue/KT-38454) Kotlin REPL in IntelliJ doesn't take module's JVM target setting into account |
| |
| ### IDE. Refactorings |
| |
| - [`KT-12878`](https://youtrack.jetbrains.com/issue/KT-12878) "Change signature" forces line breaks after every parameter declaration |
| - [`KT-30128`](https://youtrack.jetbrains.com/issue/KT-30128) Change Signature should move lambda outside of parentheses if the arguments are reordered so that the lambda goes last |
| - [`KT-35338`](https://youtrack.jetbrains.com/issue/KT-35338) Move/rename refactorings mess up code formatting by wrapping lines |
| - [`KT-38449`](https://youtrack.jetbrains.com/issue/KT-38449) Extract variable refactoring is broken by NPE |
| - [`KT-38543`](https://youtrack.jetbrains.com/issue/KT-38543) Copy can't work to package with escaped package |
| - [`KT-38627`](https://youtrack.jetbrains.com/issue/KT-38627) Rename package refactorings mess up code formatting by wrapping lines |
| |
| ### IDE. Run Configurations |
| |
| - [`KT-34516`](https://youtrack.jetbrains.com/issue/KT-34516) Don't suggest incompatible targets in a drop-down list for run test gutter icon in multiplatform projects |
| - [`KT-38102`](https://youtrack.jetbrains.com/issue/KT-38102) DeprecatedMethodException ConfigurationFactory.getId |
| |
| ### IDE. Scratch |
| |
| - [`KT-38455`](https://youtrack.jetbrains.com/issue/KT-38455) Kotlin scratch files don't take module's JVM target setting into account |
| |
| ### IDE. Script |
| |
| - [`KT-39791`](https://youtrack.jetbrains.com/issue/KT-39791) Kotlin plugin loads VFS in the output directories |
| |
| ### IDE. Structural Search |
| |
| - [`KT-39721`](https://youtrack.jetbrains.com/issue/KT-39721) Optimize Kotlin SSR by using the index |
| - [`KT-39733`](https://youtrack.jetbrains.com/issue/KT-39733) Augmented assignment matching |
| - [`KT-39769`](https://youtrack.jetbrains.com/issue/KT-39769) "When expressions" predefined template doesn't match all when expressions |
| |
| ### IDE. Wizards |
| |
| - [`KT-38673`](https://youtrack.jetbrains.com/issue/KT-38673) New Project Wizard: multiplatform templates are generated having unsupported Gradle version in a wrapper |
| - [`KT-38810`](https://youtrack.jetbrains.com/issue/KT-38810) Incorrect order of build phases in Xcode project from new wizard |
| - [`KT-38952`](https://youtrack.jetbrains.com/issue/KT-38952) Remove old new_project_wizards |
| - [`KT-39503`](https://youtrack.jetbrains.com/issue/KT-39503) New Project wizard 1.4+: release kotlinx.html version is added to dependencies with milestone IDE plugin |
| - [`KT-39700`](https://youtrack.jetbrains.com/issue/KT-39700) Wizard: group project templates on the first step by the project type |
| - [`KT-39770`](https://youtrack.jetbrains.com/issue/KT-39770) CSS Support in Kotlin wizards |
| - [`KT-39826`](https://youtrack.jetbrains.com/issue/KT-39826) Fix Android app in New Template Wizard |
| - [`KT-39843`](https://youtrack.jetbrains.com/issue/KT-39843) Change imports in JS/browser wizard |
| |
| ### JS. Tools |
| |
| - [`KT-32273`](https://youtrack.jetbrains.com/issue/KT-32273) Kotlin/JS console error on hot reload |
| - [`KT-39498`](https://youtrack.jetbrains.com/issue/KT-39498) Update dukat version in toolchain near to release of 1.4-M3 |
| |
| ### JavaScript |
| |
| - [`KT-29916`](https://youtrack.jetbrains.com/issue/KT-29916) Implement `typeOf` on JS |
| - [`KT-35857`](https://youtrack.jetbrains.com/issue/KT-35857) Kotlin/JS CLI bundled to IDEA plugin can't compile using IR back-end out of the box |
| - [`KT-36798`](https://youtrack.jetbrains.com/issue/KT-36798) KJS: prohibit using @JsExport on a non-top-level declaration |
| - [`KT-37771`](https://youtrack.jetbrains.com/issue/KT-37771) KJS: Generated TypeScript does not recursively export base classes (can fail with generics) |
| - [`KT-38113`](https://youtrack.jetbrains.com/issue/KT-38113) Review public API of JS stdlib for IR BE |
| - [`KT-38765`](https://youtrack.jetbrains.com/issue/KT-38765) [JS / IR] AssertionError: class EventEmitter: Super class should be any: with nested class extending parent class |
| - [`KT-38768`](https://youtrack.jetbrains.com/issue/KT-38768) KJS IR: generate ES2015 (aka ES6) classes |
| |
| ### Libraries |
| |
| #### New Features |
| |
| - [`KT-11253`](https://youtrack.jetbrains.com/issue/KT-11253) Function to sum long or other numeric property of items in a collection |
| - [`KT-28933`](https://youtrack.jetbrains.com/issue/KT-28933) capitalize() with Locale argument in the JDK stdlib |
| - [`KT-34142`](https://youtrack.jetbrains.com/issue/KT-34142) Create SortedMap with Comparator and items |
| - [`KT-34506`](https://youtrack.jetbrains.com/issue/KT-34506) Add Sequence.flatMap overload that works on Iterable |
| - [`KT-36894`](https://youtrack.jetbrains.com/issue/KT-36894) Support flatMapIndexed in the Collections API |
| - [`KT-38480`](https://youtrack.jetbrains.com/issue/KT-38480) Introduce experimental annotation for enabling overload resolution by lambda result |
| - [`KT-38708`](https://youtrack.jetbrains.com/issue/KT-38708) minOf/maxOf functions to return min/max value provided by selector |
| - [`KT-39707`](https://youtrack.jetbrains.com/issue/KT-39707) Make some interfaces in stdlib functional |
| |
| #### Performance Improvements |
| |
| - [`KT-23142`](https://youtrack.jetbrains.com/issue/KT-23142) toHashSet is suboptimal for inputs with a lot of duplicates |
| |
| #### Fixes |
| |
| - [`KT-21266`](https://youtrack.jetbrains.com/issue/KT-21266) Add module-info for standard library artifacts |
| - [`KT-23322`](https://youtrack.jetbrains.com/issue/KT-23322) Document 'reduce' operation behavior on empty collections |
| - [`KT-28753`](https://youtrack.jetbrains.com/issue/KT-28753) Comparing floating point values in array/list operations 'contains', 'indexOf', 'lastIndexOf': IEEE 754 or total order |
| - [`KT-30083`](https://youtrack.jetbrains.com/issue/KT-30083) Annotate KTypeProjection.STAR with JvmField in a compatible way |
| - [`KT-30084`](https://youtrack.jetbrains.com/issue/KT-30084) Annotate functions in KTypeProjection.Companion with JvmStatic |
| - [`KT-31343`](https://youtrack.jetbrains.com/issue/KT-31343) Deprecate old String <-> CharArray, ByteArray conversion api |
| - [`KT-34596`](https://youtrack.jetbrains.com/issue/KT-34596) Add some validation to KTypeProjection constructor |
| - [`KT-35978`](https://youtrack.jetbrains.com/issue/KT-35978) Review and remove experimental stdlib API status for 1.4 |
| - [`KT-38388`](https://youtrack.jetbrains.com/issue/KT-38388) Document `fromIndex` and `toIndex` parameters |
| - [`KT-38854`](https://youtrack.jetbrains.com/issue/KT-38854) Gradually change the return type of collection min/max functions to non-nullable |
| - [`KT-39023`](https://youtrack.jetbrains.com/issue/KT-39023) Document split(Pattern) extension differences from Pattern.split |
| - [`KT-39064`](https://youtrack.jetbrains.com/issue/KT-39064) Introduce minOrNull and maxOrNull extension functions on collections |
| - [`KT-39235`](https://youtrack.jetbrains.com/issue/KT-39235) Lift experimental annotation from bit operations |
| - [`KT-39237`](https://youtrack.jetbrains.com/issue/KT-39237) Lift experimental annotation from common StringBuilder |
| - [`KT-39238`](https://youtrack.jetbrains.com/issue/KT-39238) Appendable.appendRange - remove nullability |
| - [`KT-39239`](https://youtrack.jetbrains.com/issue/KT-39239) Lift experimental annotation from String <-> utf8 conversion api |
| - [`KT-39244`](https://youtrack.jetbrains.com/issue/KT-39244) KJS: update polyfills, all or most of them must not be enumerable |
| - [`KT-39330`](https://youtrack.jetbrains.com/issue/KT-39330) Migrate declarations from kotlin.dom and kotlin.browser packages to kotlinx.* |
| |
| ### Middle-end. IR |
| |
| - [`KT-31088`](https://youtrack.jetbrains.com/issue/KT-31088) need a way to compute fake overrides for pure IR |
| - [`KT-33207`](https://youtrack.jetbrains.com/issue/KT-33207) Kotlin/Native: KNPE during deserialization of an inner class |
| - [`KT-33267`](https://youtrack.jetbrains.com/issue/KT-33267) Kotlin/Native: Deserialization error for an "inner" extension property imported from a class |
| - [`KT-37255`](https://youtrack.jetbrains.com/issue/KT-37255) Make psi2ir aware of declarations provided by compiler plugins |
| |
| ### Reflection |
| |
| - [`KT-22936`](https://youtrack.jetbrains.com/issue/KT-22936) Not all things can be changed to `createType` yet, and now `defaultType` methods are starting to fail |
| - [`KT-32241`](https://youtrack.jetbrains.com/issue/KT-32241) Move KType.javaType into stdlib from reflect |
| - [`KT-34344`](https://youtrack.jetbrains.com/issue/KT-34344) KType.javaType implementation throws when invoked with a typeOf<T>() |
| - [`KT-38491`](https://youtrack.jetbrains.com/issue/KT-38491) IllegalArgumentException when using callBy on function with inline class parameters and default arguments |
| - [`KT-38881`](https://youtrack.jetbrains.com/issue/KT-38881) Add KClass.isFun modifier of functional interfaces to reflection |
| |
| ### Tools. Android Extensions |
| |
| - [`KT-25807`](https://youtrack.jetbrains.com/issue/KT-25807) Kotlin extension annotation @Parcelize in AIDL returns Object instead of original T |
| |
| ### Tools. CLI |
| |
| - [`KT-30211`](https://youtrack.jetbrains.com/issue/KT-30211) Support a way to pass arguments to the underlying JVM in kotlinc batch scripts on Windows |
| - [`KT-30778`](https://youtrack.jetbrains.com/issue/KT-30778) kotlin-compiler.jar contains shaded but not relocated kotlinx.coroutines |
| - [`KT-38070`](https://youtrack.jetbrains.com/issue/KT-38070) Compiler option to bypass prerelease metadata incompatibility error |
| - [`KT-38413`](https://youtrack.jetbrains.com/issue/KT-38413) Add JVM target bytecode version 14 |
| |
| ### Tools. Compiler Plugins |
| |
| - [`KT-39274`](https://youtrack.jetbrains.com/issue/KT-39274) [KJS / IR] Custom serializer for class without zero argument constructor doesn't compile |
| |
| ### Tools. Gradle |
| |
| - [`KT-25428`](https://youtrack.jetbrains.com/issue/KT-25428) Kotlin Gradle Plugin: Use new Gradle API for Lazy tasks |
| - [`KT-34487`](https://youtrack.jetbrains.com/issue/KT-34487) Gradle build fails with "Cannot run program "java": error=7, Argument list too long |
| - [`KT-35957`](https://youtrack.jetbrains.com/issue/KT-35957) MPP IC fails with "X has several compatible actual declarations" error |
| - [`KT-38250`](https://youtrack.jetbrains.com/issue/KT-38250) Drop support for Gradle versions older than 5.3 in the Kotlin Gradle plugin |
| |
| ### Tools. Gradle. JS |
| |
| #### New Features |
| |
| - [`KT-30619`](https://youtrack.jetbrains.com/issue/KT-30619) Support NPM transitive dependencies in multi-platform JS target |
| - [`KT-38286`](https://youtrack.jetbrains.com/issue/KT-38286) [Gradle, JS] Error handling on Webpack problems |
| |
| #### Fixes |
| |
| - [`KT-31669`](https://youtrack.jetbrains.com/issue/KT-31669) Gradle/JS: rise error when plugin loaded more than once |
| - [`KT-32531`](https://youtrack.jetbrains.com/issue/KT-32531) [Gradle/JS] Add scoped NPM dependencies |
| - [`KT-34832`](https://youtrack.jetbrains.com/issue/KT-34832) [Kotlin/JS] Failed build after webpack run (Karma not found) |
| - [`KT-35194`](https://youtrack.jetbrains.com/issue/KT-35194) Kotlin/JS: browserRun fails with "address already in use" when trying to connect to local server |
| - [`KT-35611`](https://youtrack.jetbrains.com/issue/KT-35611) Kotlin Gradle plugin should report `kotlin2js` plugin ID as deprecated |
| - [`KT-35641`](https://youtrack.jetbrains.com/issue/KT-35641) Kotlin Gradle plugin should report `kotlin-dce-js` plugin ID as deprecated |
| - [`KT-36410`](https://youtrack.jetbrains.com/issue/KT-36410) JS: Collect stats about IR backend usage |
| - [`KT-36451`](https://youtrack.jetbrains.com/issue/KT-36451) KJS Adding npm dependency breaks Webpack devserver reloading |
| - [`KT-37258`](https://youtrack.jetbrains.com/issue/KT-37258) Kotlin/JS + Gradle: in continuous mode kotlinNpmInstall time to time outputs "ENOENT: no such file or directory" error |
| - [`KT-38109`](https://youtrack.jetbrains.com/issue/KT-38109) [Gradle, JS] Error handling on Karma launcher problems |
| - [`KT-38331`](https://youtrack.jetbrains.com/issue/KT-38331) Add an ability to control generating externals for npm deps individually |
| - [`KT-38485`](https://youtrack.jetbrains.com/issue/KT-38485) [Gradle, JS] Unable to configure JS compiler with string |
| - [`KT-38683`](https://youtrack.jetbrains.com/issue/KT-38683) Remove possibility to set NPM dependency without version |
| - [`KT-38990`](https://youtrack.jetbrains.com/issue/KT-38990) Support multiple range versions for NPM dependencies |
| - [`KT-38994`](https://youtrack.jetbrains.com/issue/KT-38994) Remove possibility to set NPM dependency with npm(org, name, version) |
| - [`KT-39109`](https://youtrack.jetbrains.com/issue/KT-39109) ArithmeticException: "/ by zero" caused by kotlinNodeJsSetup task with enabled gradle caching on Windows |
| - [`KT-39210`](https://youtrack.jetbrains.com/issue/KT-39210) Kotlin/JS: with both JS and MPP modules in the same project Gradle configuration fails on `nodejs {}` and `browser {}` |
| - [`KT-39377`](https://youtrack.jetbrains.com/issue/KT-39377) Use standard source-map-loader instead of custom one |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-39184`](https://youtrack.jetbrains.com/issue/KT-39184) Support publication of Kotlin-distributed libraries with Gradle Metadata |
| - [`KT-39304`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-37514) CocoaPods Gradle plugin: Support building from terminal projects for several platforms |
| - [`KT-38440`](https://youtrack.jetbrains.com/issue/KT-38440) Make error message about missing Podfile path for cocoapods integration actionable for a user |
| - [`KT-38991`](https://youtrack.jetbrains.com/issue/KT-38991) Gradle MPP plugin: Enable parallel in-process execution for K/N compiler |
| - [`KT-39935`](https://youtrack.jetbrains.com/issue/KT-39935) Support overriding the `KotlinNativeCompile` task sources |
| - [`KT-37512`](https://youtrack.jetbrains.com/issue/KT-37512) Cocoapods Gradle plugin: Improve error logging for external tools |
| |
| ### Tools. J2K |
| |
| - [`KT-35169`](https://youtrack.jetbrains.com/issue/KT-35169) Do not show "Inline local variable" popup during "Cleaning up code" phase of J2K |
| - [`KT-38004`](https://youtrack.jetbrains.com/issue/KT-38004) J2K breaks java getter call in java code |
| - [`KT-38450`](https://youtrack.jetbrains.com/issue/KT-38450) J2K should convert Java SAM interfaces to Kotlin fun interfaces |
| |
| ### Tools. JPS |
| |
| - [`KT-27458`](https://youtrack.jetbrains.com/issue/KT-27458) The Kotlin standard library is not found in the module graph ... in a non-Kotlin project. |
| - [`KT-29552`](https://youtrack.jetbrains.com/issue/KT-29552) Project is completely rebuilt after each gradle sync. |
| |
| ### Tools. Scripts |
| |
| - [`KT-37766`](https://youtrack.jetbrains.com/issue/KT-37766) Impossible to apply compiler plugins onto scripts with the new scripting API |
| |
| ### Tools. kapt |
| |
| - [`KT-29355`](https://youtrack.jetbrains.com/issue/KT-29355) Provide access to default values for primary constructor properties |
| |
| |
| ## 1.4-M2 |
| |
| ### Compiler |
| |
| #### New Features |
| |
| - [`KT-37432`](https://youtrack.jetbrains.com/issue/KT-37432) Do not include annotations fields into 'visibility must be explicitly specified' check in api mode |
| |
| #### Performance Improvements |
| |
| - [`KT-27362`](https://youtrack.jetbrains.com/issue/KT-27362) Anonymous classes representing function/property references contain rarely used methods |
| - [`KT-35626`](https://youtrack.jetbrains.com/issue/KT-35626) NI: Performance problem with many type parameters |
| - [`KT-36047`](https://youtrack.jetbrains.com/issue/KT-36047) Compiler produces if-chain instead of switch when when subject captured as variable |
| - [`KT-36638`](https://youtrack.jetbrains.com/issue/KT-36638) Use 'java/lang/StringBuilder.append (C)Ljava/lang/StringBuilder;' when appending single character in JVM_IR |
| - [`KT-37389`](https://youtrack.jetbrains.com/issue/KT-37389) Avoid type approximation during generation constraints with EQUALITY kind |
| - [`KT-37392`](https://youtrack.jetbrains.com/issue/KT-37392) Avoid substitution and type approximation for simple calls |
| - [`KT-37546`](https://youtrack.jetbrains.com/issue/KT-37546) NI: high memory and CPU consumption due to creating useless captured types (storing in approximated types cache, unneeded computations) |
| |
| #### Fixes |
| |
| - [`KT-11265`](https://youtrack.jetbrains.com/issue/KT-11265) Factory pattern and overload resolution ambiguity |
| - [`KT-27524`](https://youtrack.jetbrains.com/issue/KT-27524) Inline class is boxed when used with suspend modifier |
| - [`KT-27586`](https://youtrack.jetbrains.com/issue/KT-27586) ClassCastException occurs if the Result (or any other inline class) is returned from a lambda |
| - [`KT-30419`](https://youtrack.jetbrains.com/issue/KT-30419) Use boxed version of an inline class in return type position for covariant and generic-specialized overrides |
| - [`KT-31163`](https://youtrack.jetbrains.com/issue/KT-31163) FIR: consider replacing comparisons with compareTo calls and some additional intrinsics |
| - [`KT-31585`](https://youtrack.jetbrains.com/issue/KT-31585) ClassCastException with derived class delegated to generic class with inline class type argument |
| - [`KT-31823`](https://youtrack.jetbrains.com/issue/KT-31823) NI: Type mismatch with a star projection and `UnsafeVariance` |
| - [`KT-33119`](https://youtrack.jetbrains.com/issue/KT-33119) Pre-increment for inline class wrapping Int compiles to direct increment instead of inc-impl |
| - [`KT-33715`](https://youtrack.jetbrains.com/issue/KT-33715) Kotlin/Native: metadata compiler |
| - [`KT-34048`](https://youtrack.jetbrains.com/issue/KT-34048) IllegalAccessError when initializing val property in EXACTLY_ONCE lambda |
| - [`KT-34433`](https://youtrack.jetbrains.com/issue/KT-34433) NI: Type mismatch with a star projection and `UnsafeVariance` |
| - [`KT-35133`](https://youtrack.jetbrains.com/issue/KT-35133) FIR Java: don't set 'isOperator' for methods with non-operator names |
| - [`KT-35234`](https://youtrack.jetbrains.com/issue/KT-35234) ClassCastException with creating an inline class from a function reference of covariant or generic-specialized override |
| - [`KT-35406`](https://youtrack.jetbrains.com/issue/KT-35406) Generic type implicitly inferred as Nothing with no warning |
| - [`KT-35587`](https://youtrack.jetbrains.com/issue/KT-35587) Plain namespace strings in JvmNameResolver.PREDEFINED_STRINGS are prone to namespace changes during jar relocation. |
| - [`KT-36044`](https://youtrack.jetbrains.com/issue/KT-36044) NI: premature fixation a type variable if there were nested lambdas (constraint source was the deepest lambda) |
| - [`KT-36057`](https://youtrack.jetbrains.com/issue/KT-36057) [FIR] Incorrect smartcast |
| - [`KT-36069`](https://youtrack.jetbrains.com/issue/KT-36069) NI: TYPE_MISMATCH caused by incorrect inference to Nothing |
| - [`KT-36125`](https://youtrack.jetbrains.com/issue/KT-36125) Callable reference resolution ambiguity error is not displayed properly in the IDE |
| - [`KT-36191`](https://youtrack.jetbrains.com/issue/KT-36191) IDE locks loading packages and editing file containing `try` keyword inside string template |
| - [`KT-36222`](https://youtrack.jetbrains.com/issue/KT-36222) NI: Improve error message about nullability mismatch for a generic call |
| - [`KT-36249`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-36345) FIR: record argument mapping for use in back-end |
| - [`KT-36446`](https://youtrack.jetbrains.com/issue/KT-36446) NI: "UnsupportedOperationException no descriptor for type constructor of IntegerLiteralType[Int,Long,Byte,Short]" with BuilderInference and delegate |
| - [`KT-36758`](https://youtrack.jetbrains.com/issue/KT-36758) [FIR] Unresolved callable reference to member of local class |
| - [`KT-36759`](https://youtrack.jetbrains.com/issue/KT-36759) [FIR] Unsupported callable reference resolution for methods with default parameters |
| - [`KT-36762`](https://youtrack.jetbrains.com/issue/KT-36762) [FIR] Unresolved `array.clone()` |
| - [`KT-36764`](https://youtrack.jetbrains.com/issue/KT-36764) [FIR] Bug in inference with DefinitelyNotNull types |
| - [`KT-36816`](https://youtrack.jetbrains.com/issue/KT-36816) NI: definitely not-null (T!!) types in invariant positions don't approximate to T inside inference process |
| - [`KT-36819`](https://youtrack.jetbrains.com/issue/KT-36819) NI: premature completion of lambdas, which are passed somewhere |
| - [`KT-36850`](https://youtrack.jetbrains.com/issue/KT-36850) Incorrect private visibility of sealed class constructors |
| - [`KT-36856`](https://youtrack.jetbrains.com/issue/KT-36856) Throwing exception when there is inheritance in Kotlin from Java class, which contains methods with the same JVM descriptors |
| - [`KT-36879`](https://youtrack.jetbrains.com/issue/KT-36879) Introduce FIR_IDENTICAL in diagnostic tests |
| - [`KT-36881`](https://youtrack.jetbrains.com/issue/KT-36881) FIR: completion don't runs for return expressions |
| - [`KT-36887`](https://youtrack.jetbrains.com/issue/KT-36887) [FIR] Unresolved member in nested lambda in initializer |
| - [`KT-36905`](https://youtrack.jetbrains.com/issue/KT-36905) [FIR] Unresolved in lambda in default argument position |
| - [`KT-36953`](https://youtrack.jetbrains.com/issue/KT-36953) AssertionError: "Unsigned type expected: null" when there is a range with an unsigned type |
| - [`KT-37009`](https://youtrack.jetbrains.com/issue/KT-37009) FIR: Bound smart-cast lost |
| - [`KT-37027`](https://youtrack.jetbrains.com/issue/KT-37027) FIR: Wrong projection on spread + varargs on non-final types |
| - [`KT-37038`](https://youtrack.jetbrains.com/issue/KT-37038) NI: redundant lambda's arrow breaks CST calculation for extension lambdas |
| - [`KT-37043`](https://youtrack.jetbrains.com/issue/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`](https://youtrack.jetbrains.com/issue/KT-37066) [FIR] Wrong type inference for lambdas |
| - [`KT-37070`](https://youtrack.jetbrains.com/issue/KT-37070) [FIR] Unresolved parameters of outer lambda in scope of inner lambda |
| - [`KT-37087`](https://youtrack.jetbrains.com/issue/KT-37087) "IllegalStateException: Can't find method 'invoke()'" for mutable property reference in default value of an inline function parameter |
| - [`KT-37091`](https://youtrack.jetbrains.com/issue/KT-37091) [FIR] Wrong inferred type of when-expression if when-argument is not-null-asserted and type is not specifies explicitly |
| - [`KT-37176`](https://youtrack.jetbrains.com/issue/KT-37176) [FIR] Incorrect resolution mode for statements of block |
| - [`KT-37302`](https://youtrack.jetbrains.com/issue/KT-37302) Unexpected conversion:`Int` constant inferred to `Long` in when expression |
| - [`KT-37327`](https://youtrack.jetbrains.com/issue/KT-37327) FIR: Smartcast problem |
| - [`KT-37343`](https://youtrack.jetbrains.com/issue/KT-37343) NI: definitely not null types pre-approximation is inconsistent with OI |
| - [`KT-37380`](https://youtrack.jetbrains.com/issue/KT-37380) NI: broken some code with def not null types due to skip needed constraints |
| - [`KT-37419`](https://youtrack.jetbrains.com/issue/KT-37419) NI: UNRESOLVED_REFERENCE_WRONG_RECEIVER is reported in case lambda with receiver is returned from `when` expression |
| - [`KT-37434`](https://youtrack.jetbrains.com/issue/KT-37434) Kotlin/JS, Kotlin/Native: fun interfaces: SAM conversion to Kotlin interface is not compiled with RESOLUTION_TO_CLASSIFIER |
| - [`KT-37447`](https://youtrack.jetbrains.com/issue/KT-37447) Expression from annotation entry in value parameter inside value parameter should be marked as USED_AS_EXPRESSION |
| - [`KT-37453`](https://youtrack.jetbrains.com/issue/KT-37453) Type arguments not checked to be empty for candidates with no declared parameters |
| - [`KT-37488`](https://youtrack.jetbrains.com/issue/KT-37488) [FIR] Incorrect exhaustiveness checking for branches with equals to object that implements sealed class |
| - [`KT-37497`](https://youtrack.jetbrains.com/issue/KT-37497) NI: 'super' is not an expression, it can not be used as a receiver for extension functions |
| - [`KT-37530`](https://youtrack.jetbrains.com/issue/KT-37530) NI: instantiation of abstract class via callable reference argument causes run time InstantiationError |
| - [`KT-37531`](https://youtrack.jetbrains.com/issue/KT-37531) NI: callable reference argument with left hand side type parameter causes frontend exception |
| - [`KT-37554`](https://youtrack.jetbrains.com/issue/KT-37554) NI: Nothing is inferred incorrectly with elvis return |
| - [`KT-37579`](https://youtrack.jetbrains.com/issue/KT-37579) NI: inconsistent behaviour with OI around implicit invoke convention after safe call with additional implicit receiver |
| - [`KT-37604`](https://youtrack.jetbrains.com/issue/KT-37604) "VerifyError: Call to wrong <init> method" in 'invoke' for adapted callable reference to constructor with coercion to Unit |
| - [`KT-37621`](https://youtrack.jetbrains.com/issue/KT-37621) NI: type variable is inferred to Nothing if the second branch was Nothing and there was upper bound for a type parameter |
| - [`KT-37626`](https://youtrack.jetbrains.com/issue/KT-37626) NI: builder inference with expected type breaks class references resolution for a class with parameters |
| - [`KT-37627`](https://youtrack.jetbrains.com/issue/KT-37627) NI: wrong order of the type variable fixation (Nothing? against a call with lambda) |
| - [`KT-37628`](https://youtrack.jetbrains.com/issue/KT-37628) NI: wrong approximation of type argument to star projection during common super type calculation |
| - [`KT-37644`](https://youtrack.jetbrains.com/issue/KT-37644) NI: appeared exception during incorporation of a captured type into a type variable for elvis resolve |
| - [`KT-37650`](https://youtrack.jetbrains.com/issue/KT-37650) NI: it's impossible to infer a type variable with the participation of a wrapped covariant type |
| - [`KT-37718`](https://youtrack.jetbrains.com/issue/KT-37718) False positive unused parameter for @JvmStatic main function in object |
| - [`KT-37779`](https://youtrack.jetbrains.com/issue/KT-37779) ClassCastException: Named argument without spread operator for vararg parameter causes code to crash on runtime |
| - [`KT-37832`](https://youtrack.jetbrains.com/issue/KT-37832) In MPP, subtypes of types defined in legacy libraries, like stdlib, cannot properly resolve on the consumer side receviing both |
| - [`KT-37861`](https://youtrack.jetbrains.com/issue/KT-37861) Capturing an outer class instance in a default parameter of inner class constructor causes VerifyError |
| - [`KT-37986`](https://youtrack.jetbrains.com/issue/KT-37986) Return value of function reference returning inline class mapped to 'java.lang.Object' is not boxed properly |
| - [`KT-37998`](https://youtrack.jetbrains.com/issue/KT-37998) '!!' operator on safe call of function returning inline class value causes CCE at runtime |
| - [`KT-38042`](https://youtrack.jetbrains.com/issue/KT-38042) Allow kotlin.Result as a return type only if one enabled inline classes explicitly |
| - [`KT-38134`](https://youtrack.jetbrains.com/issue/KT-38134) NI: Type mismatch with a star projection and `UnsafeVariance` |
| - [`KT-38298`](https://youtrack.jetbrains.com/issue/KT-38298) Inconsistent choice of candidate when both expect/actual are available (affects only `enableGranularSourceSetMetadata`) |
| - [`KT-38661`](https://youtrack.jetbrains.com/issue/KT-38661) NI: "Cannot infer type variable TypeVariable" with lambda with receiver |
| - [`KT-38668`](https://youtrack.jetbrains.com/issue/KT-38668) Project with module dependency in KN, build fails with Kotlin 1.3.71 and associated libs but passes with 1.3.61. |
| - [`KT-38857`](https://youtrack.jetbrains.com/issue/KT-38857) Class versions V1_5 or less must use F_NEW frames. |
| - [`KT-39113`](https://youtrack.jetbrains.com/issue/KT-39113) "AssertionError: Uninitialized value on stack" with EXACTLY_ONCE contract in non-inline function and lambda destructuring |
| - [`KT-28483`](https://youtrack.jetbrains.com/issue/KT-28483) Override of generic-return-typed function with inline class should lead to a boxing |
| - [`KT-37963`](https://youtrack.jetbrains.com/issue/KT-37963) ClassCastException: Value of inline class represented as 'java.lang.Object' is not boxed properly on return from lambda |
| |
| ### Docs & Examples |
| |
| - [`KT-35231`](https://youtrack.jetbrains.com/issue/KT-35231) toMutableList documentation is vague |
| |
| ### IDE |
| |
| #### Performance Improvements |
| |
| - [`KT-30541`](https://youtrack.jetbrains.com/issue/KT-30541) EDT Freeze after new Kotlin Script creation |
| - [`KT-35050`](https://youtrack.jetbrains.com/issue/KT-35050) Significant freezes due to findSdkAcrossDependencies() |
| - [`KT-37301`](https://youtrack.jetbrains.com/issue/KT-37301) Freeze when "Optimize Imports" in KotlinImportOptimizer |
| - [`KT-37466`](https://youtrack.jetbrains.com/issue/KT-37466) Invalidate partialBodyResolveCache on OCB |
| - [`KT-37467`](https://youtrack.jetbrains.com/issue/KT-37467) PerFileAnalysisCache.fetchAnalysisResults |
| - [`KT-37993`](https://youtrack.jetbrains.com/issue/KT-37993) Do not resolve references if paste code is located in the same origin |
| - [`KT-38318`](https://youtrack.jetbrains.com/issue/KT-38318) Freezes in IDEA |
| |
| #### Fixes |
| |
| - [`KT-27935`](https://youtrack.jetbrains.com/issue/KT-27935) Functional typealias with typealias in type parameters causes UnsupportedOperationException in TypeSignatureMappingKt (IDEA analysis) |
| - [`KT-31668`](https://youtrack.jetbrains.com/issue/KT-31668) Complete statement for class declaration: add '()' to supertype |
| - [`KT-33473`](https://youtrack.jetbrains.com/issue/KT-33473) UAST: References to local variable are resolved to UastKotlinPsiVariable |
| - [`KT-34564`](https://youtrack.jetbrains.com/issue/KT-34564) Kotlin USimpleNameReferenceExpression for annotation parameter resolves to null for compiled Kotlin classes |
| - [`KT-34973`](https://youtrack.jetbrains.com/issue/KT-34973) Light class incorrectly claiming ambiguous method call from Java when one overload is synthetic |
| - [`KT-35801`](https://youtrack.jetbrains.com/issue/KT-35801) UAST: UnknownKotlinExpression for valid Kotlin annotated expression |
| - [`KT-35804`](https://youtrack.jetbrains.com/issue/KT-35804) UAST: Annotations missing from catch clause parameters |
| - [`KT-35848`](https://youtrack.jetbrains.com/issue/KT-35848) UAST: ClassCastException when trying to invoke UElement for some wrapped PsiElements |
| - [`KT-36156`](https://youtrack.jetbrains.com/issue/KT-36156) Kotlin annotation attributes have blue color whereas white in Java |
| - [`KT-36275`](https://youtrack.jetbrains.com/issue/KT-36275) UAST: UCallExpression::resolve returns null for local function calls |
| - [`KT-36717`](https://youtrack.jetbrains.com/issue/KT-36717) Fix failing light class tests after switching plugin to language version 1.4 |
| - [`KT-36877`](https://youtrack.jetbrains.com/issue/KT-36877) Message bundles for copy paste are missed in 201 |
| - [`KT-36907`](https://youtrack.jetbrains.com/issue/KT-36907) IDE: `-Xuse-ir` setting on facet level does not affect highlighting |
| - [`KT-37133`](https://youtrack.jetbrains.com/issue/KT-37133) UAST: Annotating assignment expression sometimes leads to UnknownKotlinExpression |
| - [`KT-37312`](https://youtrack.jetbrains.com/issue/KT-37312) "Implement members" intention put function in the primary constructor if there are unused brackets in class |
| - [`KT-37613`](https://youtrack.jetbrains.com/issue/KT-37613) Uast: no parameters in reified method |
| - [`KT-37933`](https://youtrack.jetbrains.com/issue/KT-37933) Rare NPE in ProjectRootsUtilKt.isKotlinBinary [easy fix] |
| - [`KT-38081`](https://youtrack.jetbrains.com/issue/KT-38081) Configure kotlin in project produces IDE error "heavy operation and should not be call on AWT thread" |
| - [`KT-38354`](https://youtrack.jetbrains.com/issue/KT-38354) HMPP. IDE. Dependency leakage from leaf native to shared native module |
| - [`KT-38634`](https://youtrack.jetbrains.com/issue/KT-38634) IDE: Error on opening MPP project in 1.3.72 after opening it in 1.4-M2 |
| |
| ### IDE. Code Style, Formatting |
| |
| - [`KT-37870`](https://youtrack.jetbrains.com/issue/KT-37870) "Remove trailing comma" action stops working after applying and cancelling it |
| |
| ### IDE. Completion |
| |
| - [`KT-36808`](https://youtrack.jetbrains.com/issue/KT-36808) Delete Flow.collect from autocompletion list or make it least prioritized |
| - [`KT-36860`](https://youtrack.jetbrains.com/issue/KT-36860) Provide convenient completion of extension functions from objects |
| - [`KT-37395`](https://youtrack.jetbrains.com/issue/KT-37395) Invalid callable reference completion of member extension |
| |
| ### IDE. Debugger |
| |
| - [`KT-34906`](https://youtrack.jetbrains.com/issue/KT-34906) Implement Coroutine Debugger |
| - [`KT-35392`](https://youtrack.jetbrains.com/issue/KT-35392) Debugger omits meaningful part of the stacktrace even with disabled filter |
| - [`KT-36215`](https://youtrack.jetbrains.com/issue/KT-36215) Coroutines debugger tab is empty in Android Studio |
| - [`KT-37238`](https://youtrack.jetbrains.com/issue/KT-37238) Coroutines Debugger: dump creation fails every time |
| - [`KT-38047`](https://youtrack.jetbrains.com/issue/KT-38047) Coroutines Debugger: Assertion failed: “Should be invoked in manager thread, use DebuggerManagerThreadImpl” on moving to source code from suspended coroutine in project without debugger jar in classpath |
| - [`KT-38049`](https://youtrack.jetbrains.com/issue/KT-38049) Coroutines Debugger: NPE “null cannot be cast to non-null type com.sun.jdi.ObjectReference” is thrown by calling dumpCoroutines |
| - [`KT-38487`](https://youtrack.jetbrains.com/issue/KT-38487) Any Field Watch interaction causes a MissingResourceException |
| |
| ### IDE. Decompiler, Indexing, Stubs |
| |
| - [`KT-37896`](https://youtrack.jetbrains.com/issue/KT-37896) IAE: "Argument for @NotNull parameter 'file' of IndexTodoCacheManagerImpl.getTodoCount must not be null" through KotlinTodoSearcher.processQuery() |
| |
| ### IDE. Gradle Integration |
| |
| - [`KT-33809`](https://youtrack.jetbrains.com/issue/KT-33809) With `kotlin.mpp.enableGranularSourceSetsMetadata=true`, IDE misses dependsOn-relation between kotlin and android sourceSets, leading to issues with expect/actual matching |
| - [`KT-36354`](https://youtrack.jetbrains.com/issue/KT-36354) IDE: Gradle import from non-JVM projects: dependency to output artifact is created instead of module dependency |
| - [`KT-38037`](https://youtrack.jetbrains.com/issue/KT-38037) UnsupportedOperationException on sync gradle Kotlin project with at least two multiplatform modules |
| |
| ### IDE. Gradle. Script |
| |
| - [`KT-36763`](https://youtrack.jetbrains.com/issue/KT-36763) Drop modification stamp for scripts after project import |
| - [`KT-37237`](https://youtrack.jetbrains.com/issue/KT-37237) Script configurations should be loaded during project import in case of errors |
| - [`KT-38041`](https://youtrack.jetbrains.com/issue/KT-38041) Do not request for script configuration after VCS update |
| |
| ### IDE. Inspections and Intentions |
| |
| #### New Features |
| |
| - [`KT-3262`](https://youtrack.jetbrains.com/issue/KT-3262) Inspection "Inner class could be nested" |
| - [`KT-15723`](https://youtrack.jetbrains.com/issue/KT-15723) Add 'Convert to value' quickfix for property containing only getter |
| - [`KT-34026`](https://youtrack.jetbrains.com/issue/KT-34026) Add "Remove argument" quick fix for redundant argument in constructor call |
| - [`KT-34332`](https://youtrack.jetbrains.com/issue/KT-34332) Add "Remove argument" quick fix for redundant argument in function call |
| - [`KT-34450`](https://youtrack.jetbrains.com/issue/KT-34450) `Convert function to property` intention should be also displayed on `fun` keyword |
| - [`KT-34593`](https://youtrack.jetbrains.com/issue/KT-34593) Invert 'if' condition: Invert `String.isNotEmpty` should be `String.isEmpty` |
| - [`KT-34819`](https://youtrack.jetbrains.com/issue/KT-34819) Inspection: report useless elvis "?: return null" |
| - [`KT-37849`](https://youtrack.jetbrains.com/issue/KT-37849) Support `ReplaceWith` for supertypes call |
| |
| #### Performance Improvements |
| |
| - [`KT-37515`](https://youtrack.jetbrains.com/issue/KT-37515) Deadlock |
| |
| #### Fixes |
| |
| - [`KT-12329`](https://youtrack.jetbrains.com/issue/KT-12329) "invert if" inserts unnecessary 'continue' for statement inside a loop with 'continue' |
| - [`KT-17615`](https://youtrack.jetbrains.com/issue/KT-17615) "Convert parameter to receiver" changes `this` to `this@ < no name provided >` |
| - [`KT-20868`](https://youtrack.jetbrains.com/issue/KT-20868) IntelliJ says method from anonymous inner class with inferred interface type is not used even though it is |
| - [`KT-20907`](https://youtrack.jetbrains.com/issue/KT-20907) Secondary constructor is marked as unused by IDE when called by typealias |
| - [`KT-22368`](https://youtrack.jetbrains.com/issue/KT-22368) "Convert to block body" intention incorrectly formats closing brace |
| - [`KT-23510`](https://youtrack.jetbrains.com/issue/KT-23510) "Remove parameter" quick fix keeps lambda argument when it's out of parentheses |
| - [`KT-27601`](https://youtrack.jetbrains.com/issue/KT-27601) False positive "Unused import directive" for extension function used in KDoc |
| - [`KT-28085`](https://youtrack.jetbrains.com/issue/KT-28085) "Convert receiver to parameter" introduces incorrect this@class in lambda |
| - [`KT-30028`](https://youtrack.jetbrains.com/issue/KT-30028) "Convert parameter to receiver" introduces wrong 'this' qualifier for extension lambda receiver |
| - [`KT-31601`](https://youtrack.jetbrains.com/issue/KT-31601) "Remove redundant let call" changes semantics by introducing multiple safe calls |
| - [`KT-31800`](https://youtrack.jetbrains.com/issue/KT-31800) False positive "never used" with function in private val object expression |
| - [`KT-31912`](https://youtrack.jetbrains.com/issue/KT-31912) QF “Convert to anonymous object” do nothing on SAM-interfaces |
| - [`KT-32561`](https://youtrack.jetbrains.com/issue/KT-32561) "Property can be declared in constructor" causes another warning |
| - [`KT-32809`](https://youtrack.jetbrains.com/issue/KT-32809) Convert parameter to receiver inserts wrong qualifiers for this (when nothing needs to be changed) |
| - [`KT-34371`](https://youtrack.jetbrains.com/issue/KT-34371) "Surround with lambda" quickfix is not available for suspend lambda parameters. |
| - [`KT-34640`](https://youtrack.jetbrains.com/issue/KT-34640) Replace 'if' with 'when' leads to copy comment line above when from another if |
| - [`KT-36225`](https://youtrack.jetbrains.com/issue/KT-36225) KNPE: CodeInliner.processTypeParameterUsages with `ReplaceWith` for inline reified generic function |
| - [`KT-36266`](https://youtrack.jetbrains.com/issue/KT-36266) NPE when invoking Lift return out of if/when after intention becomes inapplicable but still beeing shown |
| - [`KT-36296`](https://youtrack.jetbrains.com/issue/KT-36296) False negative "Redundant SAM-constructor" with multiple SAM arguments |
| - [`KT-36367`](https://youtrack.jetbrains.com/issue/KT-36367) False negative "Redundant SAM-constructor" for kotlin functions |
| - [`KT-36368`](https://youtrack.jetbrains.com/issue/KT-36368) False negative "Redundant SAM-constructor" for fun interfaces in kotlin |
| - [`KT-36395`](https://youtrack.jetbrains.com/issue/KT-36395) False positive "Redundant SAM-constructor" with two java interfaces extending one another |
| - [`KT-36411`](https://youtrack.jetbrains.com/issue/KT-36411) "Put parameters on separate lines" and "Put parameters on one line" actions do not respect trailing comma |
| - [`KT-36482`](https://youtrack.jetbrains.com/issue/KT-36482) "Add JvmOverloads annotation" intention is still suggested for annotation's parameters |
| - [`KT-36686`](https://youtrack.jetbrains.com/issue/KT-36686) Implement members quickfix puts the implementation *before* the data class if it already has a body |
| - [`KT-36685`](https://youtrack.jetbrains.com/issue/KT-36685) "Convert to a range check" transform hex range to int if it is compared with "Less" or "Greater" |
| - [`KT-36707`](https://youtrack.jetbrains.com/issue/KT-36707) False positive redundant companion object on calling companion object members |
| - [`KT-36735`](https://youtrack.jetbrains.com/issue/KT-36735) Inspection 'Replace 'toString' with string template' miss curly braces and generates wrong code for constructor calls |
| - [`KT-36834`](https://youtrack.jetbrains.com/issue/KT-36834) Convert use-site targets and usages with convert property to fun intention |
| - [`KT-37213`](https://youtrack.jetbrains.com/issue/KT-37213) "Move to top level" intention does not update imports for extension functions |
| - [`KT-37496`](https://youtrack.jetbrains.com/issue/KT-37496) False positive "Remove redundant backticks" for multiple underscores variable name |
| - [`KT-37502`](https://youtrack.jetbrains.com/issue/KT-37502) False positive "redundant lambda arrow" with inline generic function with reified type in object and anonymous parameter name |
| - [`KT-37508`](https://youtrack.jetbrains.com/issue/KT-37508) "Convert receiver to parameter" breaks code in anonymous objects (this@ < no name provided >) |
| - [`KT-37576`](https://youtrack.jetbrains.com/issue/KT-37576) Kotlin InspectionSuppressor not being called for the kotlin's inspections |
| - [`KT-37749`](https://youtrack.jetbrains.com/issue/KT-37749) "Convert to anonymous object" intention is suggested for Java SAM conversion, but not for Kotlin |
| - [`KT-37781`](https://youtrack.jetbrains.com/issue/KT-37781) "Add modifier" intention/quickfix works incorrectly with functional interfaces |
| - [`KT-37893`](https://youtrack.jetbrains.com/issue/KT-37893) i18n: Incorrect quickfix name "Lift return out of '" |
| |
| ### IDE. KDoc |
| |
| - [`KT-37361`](https://youtrack.jetbrains.com/issue/KT-37361) Support for showing rendered doc comments in editor |
| |
| ### IDE. Libraries |
| |
| - [`KT-36276`](https://youtrack.jetbrains.com/issue/KT-36276) IDE: references to declarations in JavaScript KLib dependency are unresolved |
| - [`KT-37562`](https://youtrack.jetbrains.com/issue/KT-37562) IDE: references to JavaScript KLib dependency are unresolved, when project and library are compiled with "both" mode |
| |
| ### IDE. Navigation |
| |
| - [`KT-18472`](https://youtrack.jetbrains.com/issue/KT-18472) UI lockup on find usages |
| - [`KT-18619`](https://youtrack.jetbrains.com/issue/KT-18619) Find Usages of element used via import alias does not show actual usage location |
| - [`KT-34088`](https://youtrack.jetbrains.com/issue/KT-34088) Navigate | Implementations action doesn't show implementations of Java methods in Kotlin files if method has parameters referring to generic type |
| - [`KT-35006`](https://youtrack.jetbrains.com/issue/KT-35006) IDE: "Navigate to inline function call site" from stack trace for nested inline call navigates to outer inline call |
| - [`KT-36138`](https://youtrack.jetbrains.com/issue/KT-36138) 628 second freeze when doing Find Usages on data class property |
| - [`KT-36218`](https://youtrack.jetbrains.com/issue/KT-36218) Show Kotlin file members in navigation bar |
| - [`KT-37494`](https://youtrack.jetbrains.com/issue/KT-37494) AnnotatedElementsSearch unable to find annotated property accessor |
| |
| ### IDE. Project View |
| |
| - [`KT-32886`](https://youtrack.jetbrains.com/issue/KT-32886) Project tool window: Show Visibility Icons does nothing for Kotlin classes |
| - [`KT-37632`](https://youtrack.jetbrains.com/issue/KT-37632) IDE error on project structure opening |
| |
| ### IDE. Refactorings |
| |
| #### Performance Improvements |
| |
| - [`KT-37801`](https://youtrack.jetbrains.com/issue/KT-37801) Renaming private property with common name is very slow |
| |
| #### Fixes |
| |
| - [`KT-22733`](https://youtrack.jetbrains.com/issue/KT-22733) Refactor / Inline Function: fun with type parameter: KNPE at CodeInliner.processTypeParameterUsages() |
| - [`KT-27389`](https://youtrack.jetbrains.com/issue/KT-27389) MPP: Refactoring "Move Class" does not change the package declaration |
| - [`KT-29870`](https://youtrack.jetbrains.com/issue/KT-29870) Inline variable doesn't handle 'when' subject val correctly |
| - [`KT-33045`](https://youtrack.jetbrains.com/issue/KT-33045) Cover Move Refactoring by statistics (FUS) |
| - [`KT-36071`](https://youtrack.jetbrains.com/issue/KT-36071) Refactoring: Move top declaration implementation refactoring |
| - [`KT-36072`](https://youtrack.jetbrains.com/issue/KT-36072) Empty files are removed on Refactor/Move action with turned off "Delete empty source files" option |
| - [`KT-36114`](https://youtrack.jetbrains.com/issue/KT-36114) java.lang.NoClassDefFoundError exception on Refactor/Move of kotlin function if it is referenced in java |
| - [`KT-36129`](https://youtrack.jetbrains.com/issue/KT-36129) java.lang.Throwable: Invalid file exception occurs on Refactor/Move of class from kotlin script |
| - [`KT-36382`](https://youtrack.jetbrains.com/issue/KT-36382) Move file refactoring breaks ktor application config |
| - [`KT-36504`](https://youtrack.jetbrains.com/issue/KT-36504) "Extract property" suggests potentially invalid name for new property |
| - [`KT-37637`](https://youtrack.jetbrains.com/issue/KT-37637) KotlinChangeSignatureUsageProcessor broke Change Signature in Python plugin |
| - [`KT-37797`](https://youtrack.jetbrains.com/issue/KT-37797) Useless "Value for new paramater" step in 'Update usages to reflect signature changes' for method with default parameter value |
| - [`KT-37822`](https://youtrack.jetbrains.com/issue/KT-37822) Improve message "Inline all references and remove the kind" |
| - [`KT-38348`](https://youtrack.jetbrains.com/issue/KT-38348) UL methods return signature without generic type parameters |
| - [`KT-38527`](https://youtrack.jetbrains.com/issue/KT-38527) Move nested class to upper level fails silently: MissingResourceException |
| |
| ### IDE. Script |
| |
| - [`KT-37765`](https://youtrack.jetbrains.com/issue/KT-37765) NCDFE KJvmCompiledModuleInMemory on running `*.main.kts` script |
| |
| ### IDE. Tests Support |
| |
| - [`KT-36716`](https://youtrack.jetbrains.com/issue/KT-36716) With `kotlin.gradle.testing.enabled=true`, gradle console output gets extra ijLog messages |
| - [`KT-36910`](https://youtrack.jetbrains.com/issue/KT-36910) There are no Run/Debug actions in context menu for non-JVM platform-specific test results |
| - [`KT-37037`](https://youtrack.jetbrains.com/issue/KT-37037) [JS, Debug] Node.JS test debug doesn't stop on breakpoints |
| |
| ### IDE. Wizards |
| |
| #### New Features |
| |
| - [`KT-36150`](https://youtrack.jetbrains.com/issue/KT-36150) New Project Wizard: provide a way to connect with "dependsOn" relation the added project modules |
| - [`KT-36179`](https://youtrack.jetbrains.com/issue/KT-36179) New Project Wizard: it's impossible to make a JVM target friendly to Java code in a multiplatform project |
| |
| #### Fixes |
| |
| - [`KT-35583`](https://youtrack.jetbrains.com/issue/KT-35583) New Project wizard: don't suggest build systems which cannot be used |
| - [`KT-35585`](https://youtrack.jetbrains.com/issue/KT-35585) New Project wizard: remember choices which have sense for many projects |
| - [`KT-35691`](https://youtrack.jetbrains.com/issue/KT-35691) New Project wizard: artifact and group values are effectively ignored |
| - [`KT-35693`](https://youtrack.jetbrains.com/issue/KT-35693) New Project wizard creates pom.xml / build.gradle referring to release Kotlin version only |
| - [`KT-36136`](https://youtrack.jetbrains.com/issue/KT-36136) New Project Wizard: generated projects are missing m2 Gradle repository |
| - [`KT-36137`](https://youtrack.jetbrains.com/issue/KT-36137) New Project Wizard: "multiplatform" shall be written as a single word, without the capital P in the middle |
| - [`KT-36155`](https://youtrack.jetbrains.com/issue/KT-36155) New Project Wizard: show warning "Multiplatform project cannot be generated" only for MPP projects |
| - [`KT-36162`](https://youtrack.jetbrains.com/issue/KT-36162) New Project Wizard: make the error messages in modules editor actionable |
| - [`KT-36163`](https://youtrack.jetbrains.com/issue/KT-36163) New Project Wizard: remove trailing spaces in Android SDK Path automatically |
| - [`KT-36166`](https://youtrack.jetbrains.com/issue/KT-36166) New Project Wizard: addition of Android target into a multiplatform project doesn't add a necessary minimal Android configuration |
| - [`KT-36169`](https://youtrack.jetbrains.com/issue/KT-36169) New Project Wizard: Android-related projects failed to build |
| - [`KT-36176`](https://youtrack.jetbrains.com/issue/KT-36176) New Project Wizard: module templates doesn't work for multiplatform projects |
| - [`KT-36177`](https://youtrack.jetbrains.com/issue/KT-36177) New Project Wizard: it's impossible to add more than one target of JVM kind to a multiplatform project |
| - [`KT-36180`](https://youtrack.jetbrains.com/issue/KT-36180) New Project Wizard: it's impossible to set target JVM version for a JVM module |
| - [`KT-36226`](https://youtrack.jetbrains.com/issue/KT-36226) New Project Wizard: add Mobile Android/iOS project template |
| - [`KT-36267`](https://youtrack.jetbrains.com/issue/KT-36267) New Project Wizard: flatten JVM targets list for multiplatform projects |
| - [`KT-36328`](https://youtrack.jetbrains.com/issue/KT-36328) New Project wizard fails for certain templates with AE: "Wrong line separators" at KotlinFormattingModelBuilder.createModel() |
| - [`KT-37599`](https://youtrack.jetbrains.com/issue/KT-37599) New Project Wizard: Open Kotlin Wizard via hyperlink |
| - [`KT-37667`](https://youtrack.jetbrains.com/issue/KT-37667) New project wizard: implement new UI design |
| - [`KT-37674`](https://youtrack.jetbrains.com/issue/KT-37674) Kotlin version in build files includes the IDEA version |
| - [`KT-38061`](https://youtrack.jetbrains.com/issue/KT-38061) New Project wizard 1.4: do not allow choosing build system if corresponding IJ plugin is disabled |
| - [`KT-38567`](https://youtrack.jetbrains.com/issue/KT-38567) New Project wizard 1.4+: Improve processing case when project with required path already exists |
| - [`KT-38579`](https://youtrack.jetbrains.com/issue/KT-38579) New Project wizard 1.4+: multiplatform mobile application: build fails on lint task: Configuration with name 'compileClasspath' not found |
| - [`KT-38929`](https://youtrack.jetbrains.com/issue/KT-38929) New project wizard: update libraries in project template according to kotlin IDE plugin version |
| - [`KT-38417`](https://youtrack.jetbrains.com/issue/KT-38417) Enable new project wizard by-default |
| - [`KT-38158`](https://youtrack.jetbrains.com/issue/KT-38158) java.lang.NullPointerException when try to create new project via standard wizard on Mac os |
| |
| ### JS. Tools |
| |
| - [`KT-36484`](https://youtrack.jetbrains.com/issue/KT-36484) KotlinJS, MPP: Compilation throws "TypeError: b is not a function" only in production mode |
| |
| ### JavaScript |
| |
| - [`KT-31126`](https://youtrack.jetbrains.com/issue/KT-31126) Invalid JS constructor call (primary ordinary -> secondary external) |
| - [`KT-35966`](https://youtrack.jetbrains.com/issue/KT-35966) Make @JsExport annotation usable in common code |
| - [`KT-37128`](https://youtrack.jetbrains.com/issue/KT-37128) KJS: StackOverflowException when using reified recursive bound for type parameter |
| - [`KT-37163`](https://youtrack.jetbrains.com/issue/KT-37163) KJS: NullPointerException on using intersection type as a reified one |
| - [`KT-37418`](https://youtrack.jetbrains.com/issue/KT-37418) Support `AssociatedObjectKey` and `findAssociatedObject` in JS IR BE |
| |
| ### Libraries |
| |
| #### New Features |
| |
| - [`KT-8658`](https://youtrack.jetbrains.com/issue/KT-8658) Add property delegates which call get/set on the given KProperty instance, e.g. a property reference |
| - [`KT-12448`](https://youtrack.jetbrains.com/issue/KT-12448) Make `@Suppress` applicable for type parameters |
| - [`KT-22932`](https://youtrack.jetbrains.com/issue/KT-22932) String.format should support null locale |
| - [`KT-23514`](https://youtrack.jetbrains.com/issue/KT-23514) assertFailsWith should link unexpected exception as cause |
| - [`KT-23737`](https://youtrack.jetbrains.com/issue/KT-23737) JS & MPP: Support exception cause and addSuppressed |
| - [`KT-25651`](https://youtrack.jetbrains.com/issue/KT-25651) Add shuffle() to Array<T>, ByteArray, IntArray, etc to match MutableList |
| - [`KT-26494`](https://youtrack.jetbrains.com/issue/KT-26494) Create an interface with provideDelegate() |
| - [`KT-27729`](https://youtrack.jetbrains.com/issue/KT-27729) Inherit `ReadWriteProperty` from `ReadOnlyProperty` |
| - [`KT-28290`](https://youtrack.jetbrains.com/issue/KT-28290) Add the onEach extension function to the Array |
| - [`KT-29182`](https://youtrack.jetbrains.com/issue/KT-29182) SIZE_BYTES/BITS for Float and Double |
| - [`KT-30372`](https://youtrack.jetbrains.com/issue/KT-30372) Add associateWith to Array<T> |
| - [`KT-33906`](https://youtrack.jetbrains.com/issue/KT-33906) Add vararg overloads for maxOf/minOf functions |
| - [`KT-34161`](https://youtrack.jetbrains.com/issue/KT-34161) Array.contentEquals/contentHashCode/contentToString should allow null array receiver and argument |
| - [`KT-35851`](https://youtrack.jetbrains.com/issue/KT-35851) Add setOfNotNull function |
| - [`KT-36866`](https://youtrack.jetbrains.com/issue/KT-36866) reduceIndexedOrNull |
| - [`KT-36955`](https://youtrack.jetbrains.com/issue/KT-36955) stdlib: Reverse range and sortDescending range |
| - [`KT-37161`](https://youtrack.jetbrains.com/issue/KT-37161) Add #onEachIndexed similar to #forEachIndexed |
| - [`KT-37603`](https://youtrack.jetbrains.com/issue/KT-37603) Throwable.stackTraceToString: string with detailed information about exception |
| - [`KT-37751`](https://youtrack.jetbrains.com/issue/KT-37751) Implement shuffled() method Sequences |
| - [`KT-37804`](https://youtrack.jetbrains.com/issue/KT-37804) Add 'fail' in kotlin-test that allows to specify cause |
| - [`KT-37839`](https://youtrack.jetbrains.com/issue/KT-37839) StringBuilder.appendLine in stdlib-common |
| - [`KT-37910`](https://youtrack.jetbrains.com/issue/KT-37910) Support Media Source Extension (MSE) and Encrypted Media Extensions (EME) in Kotlin/Js |
| - [`KT-38044`](https://youtrack.jetbrains.com/issue/KT-38044) Common Throwable.printStackTrace |
| |
| #### Performance Improvements |
| |
| - [`KT-37416`](https://youtrack.jetbrains.com/issue/KT-37416) readLine() is very slow |
| |
| #### Fixes |
| |
| - [`KT-13887`](https://youtrack.jetbrains.com/issue/KT-13887) Double/Float companion values such as NaN should be constants |
| - [`KT-14119`](https://youtrack.jetbrains.com/issue/KT-14119) `String.toBoolean()` should be `String?.toBoolean()` |
| - [`KT-16529`](https://youtrack.jetbrains.com/issue/KT-16529) Names of KProperty's type parameters are inconsistent with ReadOnlyProperty/ReadWriteProperty |
| - [`KT-36356`](https://youtrack.jetbrains.com/issue/KT-36356) Specify which element Iterable.distinctBy(selector) retains |
| - [`KT-38060`](https://youtrack.jetbrains.com/issue/KT-38060) runningFold and runningReduce instead of scanReduce |
| - [`KT-38566`](https://youtrack.jetbrains.com/issue/KT-38566) Kotlin/JS IR: kx.serialization & ktor+JsonFeature: SerializationException: Can't locate argument-less serializer for class |
| |
| ### Reflection |
| |
| - [`KT-29969`](https://youtrack.jetbrains.com/issue/KT-29969) Support optional vararg parameter in `KCallable.callBy` |
| - [`KT-37707`](https://youtrack.jetbrains.com/issue/KT-37707) "IllegalStateException: superInterface.classLoader must not be null" on class, which implements "AutoCloaseable" interface, "isAccessible" property changing |
| |
| ### Tools. CLI |
| |
| - [`KT-37090`](https://youtrack.jetbrains.com/issue/KT-37090) file does not exist: `C:\Users\NK\DOWNLO~1\kotlin-compiler-1.3.61\kotlinc\bin\..\lib\kotlin-compiler.jar" from standalone compiler on Windows` |
| |
| ### Tools. Gradle |
| |
| - [`KT-35447`](https://youtrack.jetbrains.com/issue/KT-35447) Warnings should be piped to stderr when using allWarningsAsErrors = true |
| - [`KT-35942`](https://youtrack.jetbrains.com/issue/KT-35942) User test Gradle source set code cannot reach out internal members from the production code |
| - [`KT-36019`](https://youtrack.jetbrains.com/issue/KT-36019) Implement Gradle DSL for explicit API mode |
| |
| ### Tools. Gradle. JS |
| |
| #### New Features |
| |
| - [`KT-32017`](https://youtrack.jetbrains.com/issue/KT-32017) Kotlin/JS in MPP: support changing the generated JS file name in Gradle DSL |
| - [`KT-32721`](https://youtrack.jetbrains.com/issue/KT-32721) [Gradle, JS] CSS Support for browser |
| - [`KT-36843`](https://youtrack.jetbrains.com/issue/KT-36843) [Gradle, JS, IR] Configure JS Compiler Type through DSL |
| - [`KT-37207`](https://youtrack.jetbrains.com/issue/KT-37207) Allow to use npm dependency from a local directory |
| - [`KT-38056`](https://youtrack.jetbrains.com/issue/KT-38056) [Gradle, JS] Group tasks by browser and node |
| |
| #### Fixes |
| |
| - [`KT-32466`](https://youtrack.jetbrains.com/issue/KT-32466) kotlinNpmResolve fails in the case of composite build |
| - [`KT-34468`](https://youtrack.jetbrains.com/issue/KT-34468) Consider custom versions while parsing yarn.lock |
| - [`KT-36489`](https://youtrack.jetbrains.com/issue/KT-36489) [Gradle, JS, IR]: Correct naming for both compilers |
| - [`KT-36784`](https://youtrack.jetbrains.com/issue/KT-36784) Kotlin. JS. MPP – Cannot find project :js when using Gradle composite builds |
| - [`KT-36864`](https://youtrack.jetbrains.com/issue/KT-36864) KJS. Composite build require JS plugin in root project |
| - [`KT-37240`](https://youtrack.jetbrains.com/issue/KT-37240) KJS. Nondeterministic execution order for webpack scripts (from folder 'webpack.config.d') |
| - [`KT-37582`](https://youtrack.jetbrains.com/issue/KT-37582) Kotlin/JS: KotlinWebpack non-nullable properties are shown as nullable in Gradle configuration |
| - [`KT-37587`](https://youtrack.jetbrains.com/issue/KT-37587) KJS. Karma ignore dynamically created webpack patches |
| - [`KT-37635`](https://youtrack.jetbrains.com/issue/KT-37635) [Gradle, JS] Webpack devtool provide enum for only 2 variants |
| - [`KT-37636`](https://youtrack.jetbrains.com/issue/KT-37636) [Gradle, JS] Extract package.json from klib |
| - [`KT-37762`](https://youtrack.jetbrains.com/issue/KT-37762) [Gradle, JS] Actualize Node and Yarn versions in 1.4 |
| - [`KT-37988`](https://youtrack.jetbrains.com/issue/KT-37988) [Gradle, JS] Bump NPM versions on 1.4-M2 |
| - [`KT-38051`](https://youtrack.jetbrains.com/issue/KT-38051) [Gradle, JS] browserDistribution doesn't provide outputs |
| - [`KT-38519`](https://youtrack.jetbrains.com/issue/KT-38519) JS Compiler per project without additional import |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-36674`](https://youtrack.jetbrains.com/issue/KT-36674) `allMetadataJar` task fails if there is an empty intermediate source set in a multiplatform project with native targets |
| - [`KT-38746`](https://youtrack.jetbrains.com/issue/KT-38746) In HMPP, compilation of a shared-native source set could be mistakenly disabled |
| - [`KT-39094`](https://youtrack.jetbrains.com/issue/KT-39094) Provide a way to pass custom JVM args to commonizer from Gradle |
| |
| ### Tools. Gradle. Native |
| |
| - [`KT-25887`](https://youtrack.jetbrains.com/issue/KT-25887) Kotlin Native gradle build fail with `endorsed is not supported. Endorsed standards and standalone APIs` on jdk > 8 & CLion |
| - [`KT-36721`](https://youtrack.jetbrains.com/issue/KT-36721) Deduce a fully qualified unique_name in klib manifest from something like group name |
| - [`KT-37730`](https://youtrack.jetbrains.com/issue/KT-37730) Native part of multiplatform build fails with "unresolved reference" errors if there is a local and external module with the same name |
| - [`KT-38174`](https://youtrack.jetbrains.com/issue/KT-38174) Kotlin/Native: Disable platform libraries generation at the user side by default |
| |
| ### Tools. J2K |
| |
| #### Fixes |
| |
| - [`KT-34965`](https://youtrack.jetbrains.com/issue/KT-34965) Convert function reference copied from function call |
| - [`KT-35593`](https://youtrack.jetbrains.com/issue/KT-35593) New J2K: method's names don't change between functions declared in Number.java and Number.kt |
| - [`KT-35897`](https://youtrack.jetbrains.com/issue/KT-35897) J2K converts private enum constructors to internal constructors and produces NON_PRIVATE_CONSTRUCTOR_IN_ENUM error |
| - [`KT-36088`](https://youtrack.jetbrains.com/issue/KT-36088) J2K: StackOverflowError when trying to convert Java class with recursive type bound |
| - [`KT-36149`](https://youtrack.jetbrains.com/issue/KT-36149) J2K: PsiInvalidElementAccessException: Element class com.intellij.psi.impl.source.tree.CompositeElement of type DOT_QUALIFIED_EXPRESSION |
| - [`KT-36152`](https://youtrack.jetbrains.com/issue/KT-36152) J2K: RuntimeException: Couldn't get containingKtFile for ktElement |
| - [`KT-36159`](https://youtrack.jetbrains.com/issue/KT-36159) J2K: ClassCastException if constructor contains a super() call and class extends from Kotlin class |
| - [`KT-36190`](https://youtrack.jetbrains.com/issue/KT-36190) J2K: Wrong property name generation when getter for non-boolean value starts with 'is' |
| - [`KT-36891`](https://youtrack.jetbrains.com/issue/KT-36891) j2k: Fail with java.lang.NoClassDefFoundError when converting array |
| - [`KT-37052`](https://youtrack.jetbrains.com/issue/KT-37052) new J2K: Java private function is converted to `private open` top-level function |
| - [`KT-37620`](https://youtrack.jetbrains.com/issue/KT-37620) new J2K: IndexOutOfBoundsException (DefaultArgumentsConversion.applyToElement) with overloaded function with vararg parameter |
| - [`KT-37919`](https://youtrack.jetbrains.com/issue/KT-37919) new J2K: Redundant line feeds when converting function |
| |
| ### Tools. JPS |
| |
| - [`KT-37159`](https://youtrack.jetbrains.com/issue/KT-37159) A Typo (forgotten space) in build output in Circular dependencies warning description |
| |
| ### Tools. Scripts |
| |
| - [`KT-30086`](https://youtrack.jetbrains.com/issue/KT-30086) ThreadDeath when running kotlin scripts using jsr223 |
| - [`KT-37558`](https://youtrack.jetbrains.com/issue/KT-37558) Scripts: implicit receivers don't work correctly when using CompiledScriptJarsCache |
| - [`KT-37823`](https://youtrack.jetbrains.com/issue/KT-37823) Consecutive invocations of main.kts throw a KotlinReflectionNotSupportedError |
| |
| |
| ## 1.4-M1 |
| |
| ### Compiler |
| |
| #### New Features |
| |
| - [`KT-4240`](https://youtrack.jetbrains.com/issue/KT-4240) Type inference possible improvements: analyze lambda with expected type from the outer call |
| - [`KT-7304`](https://youtrack.jetbrains.com/issue/KT-7304) Smart-casts and generic calls with multiple bounds on type parameters |
| - [`KT-7745`](https://youtrack.jetbrains.com/issue/KT-7745) Support named arguments in their own position even if the result appears as mixed |
| - [`KT-7770`](https://youtrack.jetbrains.com/issue/KT-7770) SAM for Kotlin classes |
| - [`KT-8834`](https://youtrack.jetbrains.com/issue/KT-8834) Support function references with default values as other function types |
| - [`KT-10930`](https://youtrack.jetbrains.com/issue/KT-10930) Expected type isn't taken into account for delegated properties |
| - [`KT-11723`](https://youtrack.jetbrains.com/issue/KT-11723) Support coercion to Unit in callable reference resolution |
| - [`KT-14416`](https://youtrack.jetbrains.com/issue/KT-14416) Support of @PolymorphicSignature in Kotlin compiler |
| - [`KT-16873`](https://youtrack.jetbrains.com/issue/KT-16873) Support COERSION_TO_UNIT for suspend lambdas |
| - [`KT-17643`](https://youtrack.jetbrains.com/issue/KT-17643) Inferring type of Pair based on known Map type |
| - [`KT-19869`](https://youtrack.jetbrains.com/issue/KT-19869) Support function references to functions with vararg if expected type ends with repeated vararg element type |
| - [`KT-21178`](https://youtrack.jetbrains.com/issue/KT-21178) Prohibit access of protected members inside public inline members |
| - [`KT-21368`](https://youtrack.jetbrains.com/issue/KT-21368) Improve type inference |
| - [`KT-25866`](https://youtrack.jetbrains.com/issue/KT-25866) Iterable.forEach does not accept functions that return non-Unit values |
| - [`KT-26165`](https://youtrack.jetbrains.com/issue/KT-26165) Support VarHandle in JVM codegen |
| - [`KT-27582`](https://youtrack.jetbrains.com/issue/KT-27582) Allow contracts on final non-override members |
| - [`KT-28298`](https://youtrack.jetbrains.com/issue/KT-28298) Allow references to generic (reified) type parameters in contracts |
| - [`KT-31230`](https://youtrack.jetbrains.com/issue/KT-31230) Refine rules for allowed Array-based class literals on different platforms: allow `Array::class` everywhere, disallow `Array<...>::class` on non-JVM |
| - [`KT-31244`](https://youtrack.jetbrains.com/issue/KT-31244) Choose Java field during overload resolution with a pure Kotlin property |
| - [`KT-31734`](https://youtrack.jetbrains.com/issue/KT-31734) Empty parameter list required on Annotations of function types |
| - [`KT-33990`](https://youtrack.jetbrains.com/issue/KT-33990) Type argument isn't checked during resolution part |
| - [`KT-33413`](https://youtrack.jetbrains.com/issue/KT-33413) Allow 'break' and 'continue' in 'when' statement to point to innermost surrounding loop |
| - [`KT-34743`](https://youtrack.jetbrains.com/issue/KT-34743) Support trailing comma in the compiler |
| - [`KT-34847`](https://youtrack.jetbrains.com/issue/KT-34847) Lift restrictions from `kotlin.Result` |
| |
| #### Fixes |
| |
| - [`KT-2869`](https://youtrack.jetbrains.com/issue/KT-2869) Incorrect resolve with 'unsafe call error' and generics |
| - [`KT-3630`](https://youtrack.jetbrains.com/issue/KT-3630) Extension property (generic function type) does not work |
| - [`KT-3668`](https://youtrack.jetbrains.com/issue/KT-3668) Infer type parameters for extension 'get' in delegated property |
| - [`KT-3850`](https://youtrack.jetbrains.com/issue/KT-3850) Receiver check fails when type parameter has another parameter as a bound |
| - [`KT-3884`](https://youtrack.jetbrains.com/issue/KT-3884) Generic candidate with contradiction is preferred over matching global function |
| - [`KT-4625`](https://youtrack.jetbrains.com/issue/KT-4625) Poor error highlighting when assigning not matched type to index operator |
| - [`KT-5449`](https://youtrack.jetbrains.com/issue/KT-5449) Wrong resolve when functions differ only in the nullability of generic type |
| - [`KT-5606`](https://youtrack.jetbrains.com/issue/KT-5606) "Type mismatch" in Java constructor call with SAM lambda and `vararg` parameter |
| - [`KT-6005`](https://youtrack.jetbrains.com/issue/KT-6005) Type inference problem in sam constructors |
| - [`KT-6591`](https://youtrack.jetbrains.com/issue/KT-6591) Overloaded generic extension function call with null argument resolved incorrectly |
| - [`KT-6812`](https://youtrack.jetbrains.com/issue/KT-6812) Type inference fails when passing a null instead of a generic type |
| - [`KT-7298`](https://youtrack.jetbrains.com/issue/KT-7298) Bogus type inference error in generic method call translated from Java |
| - [`KT-7301`](https://youtrack.jetbrains.com/issue/KT-7301) Type inference error in Kotlin code translated from Java |
| - [`KT-7333`](https://youtrack.jetbrains.com/issue/KT-7333) Type inference fails with star-projections in code translated from Java |
| - [`KT-7363`](https://youtrack.jetbrains.com/issue/KT-7363) Kotlin code with star-projections translated from Java does not typecheck |
| - [`KT-7378`](https://youtrack.jetbrains.com/issue/KT-7378) 3-dimension array type inference fail |
| - [`KT-7410`](https://youtrack.jetbrains.com/issue/KT-7410) Call resolution error appears only after adding non-applicable overload |
| - [`KT-7420`](https://youtrack.jetbrains.com/issue/KT-7420) Type inference sometimes infers less specific type than in Java |
| - [`KT-7758`](https://youtrack.jetbrains.com/issue/KT-7758) Type of lambda can't be infered |
| - [`KT-8218`](https://youtrack.jetbrains.com/issue/KT-8218) Wrong 'equals' for generic types with platform type and error type |
| - [`KT-8265`](https://youtrack.jetbrains.com/issue/KT-8265) Non-typesafe program is compiled without errors |
| - [`KT-8637`](https://youtrack.jetbrains.com/issue/KT-8637) Useless diagnostics for type parameters with unsafe nullability |
| - [`KT-8966`](https://youtrack.jetbrains.com/issue/KT-8966) Smart casts don't work with implicit receiver and extension on type parameter with bounds |
| - [`KT-10265`](https://youtrack.jetbrains.com/issue/KT-10265) Type inference problem when using sealed class and interfaces |
| - [`KT-10364`](https://youtrack.jetbrains.com/issue/KT-10364) Call completeCall on variable before invoke resolution |
| - [`KT-10612`](https://youtrack.jetbrains.com/issue/KT-10612) java.util.Comparator.comparing type inference |
| - [`KT-10628`](https://youtrack.jetbrains.com/issue/KT-10628) Wrong type mismatch with star projection of inner class inside use-site projected type |
| - [`KT-10662`](https://youtrack.jetbrains.com/issue/KT-10662) Smartcast with not-null assertion |
| - [`KT-10681`](https://youtrack.jetbrains.com/issue/KT-10681) Explicit type arguments not taken into account when determining applicable overloads of a generic function |
| - [`KT-10755`](https://youtrack.jetbrains.com/issue/KT-10755) Not "least" common super-type is selected for nested 'if' result in presence of multiple inheritance |
| - [`KT-10929`](https://youtrack.jetbrains.com/issue/KT-10929) Type inference based on receiver type doesn't work for delegated properties in some cases |
| - [`KT-10962`](https://youtrack.jetbrains.com/issue/KT-10962) Wrong resolution when argument has unstable DataFlowValue |
| - [`KT-11108`](https://youtrack.jetbrains.com/issue/KT-11108) RxJava failed platform type inference |
| - [`KT-11137`](https://youtrack.jetbrains.com/issue/KT-11137) Java synthetic property does not function for a type with projection |
| - [`KT-11144`](https://youtrack.jetbrains.com/issue/KT-11144) UninferredParameterTypeConstructor exception during build |
| - [`KT-11184`](https://youtrack.jetbrains.com/issue/KT-11184) Type inference failed for combination of safe-call, elvis, HashSet and emptySet |
| - [`KT-11218`](https://youtrack.jetbrains.com/issue/KT-11218) Type inference incorrectly infers nullable type for type parameter |
| - [`KT-11323`](https://youtrack.jetbrains.com/issue/KT-11323) Type inference failed in call with lambda returning emptyList |
| - [`KT-11331`](https://youtrack.jetbrains.com/issue/KT-11331) Unexpected "Type inference failed" in SAM-conversion to projected type |
| - [`KT-11444`](https://youtrack.jetbrains.com/issue/KT-11444) Type inference fails |
| - [`KT-11664`](https://youtrack.jetbrains.com/issue/KT-11664) Disfunctional inference with nullable type parameters |
| - [`KT-11894`](https://youtrack.jetbrains.com/issue/KT-11894) Type substitution bug related platform types |
| - [`KT-11897`](https://youtrack.jetbrains.com/issue/KT-11897) No error REIFIED_TYPE_FORBIDDEN_SUBSTITUTION on captured type |
| - [`KT-11898`](https://youtrack.jetbrains.com/issue/KT-11898) Type inference error related to captured types |
| - [`KT-12036`](https://youtrack.jetbrains.com/issue/KT-12036) Type inference failed |
| - [`KT-12038`](https://youtrack.jetbrains.com/issue/KT-12038) non-null checks and inference |
| - [`KT-12190`](https://youtrack.jetbrains.com/issue/KT-12190) Type inference for TreeMap type parameters from expected type doesn't work when passing comparator. |
| - [`KT-12684`](https://youtrack.jetbrains.com/issue/KT-12684) A problem with reified type-parameters and smart-casts |
| - [`KT-12833`](https://youtrack.jetbrains.com/issue/KT-12833) 'it' does not work in typed containers of lambdas |
| - [`KT-13002`](https://youtrack.jetbrains.com/issue/KT-13002) "Error type encountered: UninferredParameterTypeConstructor" with elvis and when |
| - [`KT-13028`](https://youtrack.jetbrains.com/issue/KT-13028) cast with star on on type with contravariant generic parameter makes the compiler crash |
| - [`KT-13339`](https://youtrack.jetbrains.com/issue/KT-13339) Type inference failed for synthetic Java property call on implicit smart cast receiver |
| - [`KT-13398`](https://youtrack.jetbrains.com/issue/KT-13398) "Type T is not a subtype of Any" |
| - [`KT-13683`](https://youtrack.jetbrains.com/issue/KT-13683) Type inference incorporation error when passed null into not-null parameter |
| - [`KT-13721`](https://youtrack.jetbrains.com/issue/KT-13721) Type inference fails when function arguments are involved |
| - [`KT-13725`](https://youtrack.jetbrains.com/issue/KT-13725) Type inference fails to infer type with array as a generic argument |
| - [`KT-13800`](https://youtrack.jetbrains.com/issue/KT-13800) Type inference fails when null passed as argument (related to common system) |
| - [`KT-13934`](https://youtrack.jetbrains.com/issue/KT-13934) Callable reference to companion object member via class name is not resolved |
| - [`KT-13964`](https://youtrack.jetbrains.com/issue/KT-13964) Unknown descriptor on compiling invoke operator call with generic parameter |
| - [`KT-13965`](https://youtrack.jetbrains.com/issue/KT-13965) Invoke operator called on extension property of generic type has incorrect parameter type |
| - [`KT-13992`](https://youtrack.jetbrains.com/issue/KT-13992) Incorrect TYPE_INFERENCE_UPPER_BOUND_VIOLATED |
| - [`KT-14101`](https://youtrack.jetbrains.com/issue/KT-14101) Type inference failed on null |
| - [`KT-14174`](https://youtrack.jetbrains.com/issue/KT-14174) Compiler can't infer type when it should be able to |
| - [`KT-14351`](https://youtrack.jetbrains.com/issue/KT-14351) Internal error with uninferred types for compiling complicated when expression |
| - [`KT-14460`](https://youtrack.jetbrains.com/issue/KT-14460) Smartcast isn't considered as necessary in the last expression of lambda |
| - [`KT-14463`](https://youtrack.jetbrains.com/issue/KT-14463) Missing MEMBER_PROJECTED_OUT error after smartcast with invoke |
| - [`KT-14499`](https://youtrack.jetbrains.com/issue/KT-14499) Type inference fails even if we specify `T` explicitly |
| - [`KT-14725`](https://youtrack.jetbrains.com/issue/KT-14725) kotlin generics makes agera's compiled repositories unusable |
| - [`KT-14803`](https://youtrack.jetbrains.com/issue/KT-14803) Weird smart cast absence in lazy delegate |
| - [`KT-14972`](https://youtrack.jetbrains.com/issue/KT-14972) Type inference failed: wrong common supertype for types with several subtypes |
| - [`KT-14980`](https://youtrack.jetbrains.com/issue/KT-14980) Type inference for nullable type in if statement |
| - [`KT-15155`](https://youtrack.jetbrains.com/issue/KT-15155) False "No cast needed" warning for conversion to star-projected type |
| - [`KT-15185`](https://youtrack.jetbrains.com/issue/KT-15185) Inference for coroutines not work in case where we have suspend function with new coroutine inside |
| - [`KT-15263`](https://youtrack.jetbrains.com/issue/KT-15263) Kotlin can't infer the type of a multiple bounded method |
| - [`KT-15389`](https://youtrack.jetbrains.com/issue/KT-15389) Type inference for coroutines in 1.1-M04 |
| - [`KT-15394`](https://youtrack.jetbrains.com/issue/KT-15394) Support coercion to Unit for last statement for suspend lambda |
| - [`KT-15396`](https://youtrack.jetbrains.com/issue/KT-15396) Type inference for last statement in coroutine |
| - [`KT-15488`](https://youtrack.jetbrains.com/issue/KT-15488) Type inference not working on generic function returning generic type in lambda result |
| - [`KT-15648`](https://youtrack.jetbrains.com/issue/KT-15648) Better use of overladed functions with nullables |
| - [`KT-15922`](https://youtrack.jetbrains.com/issue/KT-15922) TYPE_INFERENCE_CONFLICTING_SUBSTITUTION for function reference |
| - [`KT-15923`](https://youtrack.jetbrains.com/issue/KT-15923) Internal error: empty intersection for types |
| - [`KT-16247`](https://youtrack.jetbrains.com/issue/KT-16247) Overload resolution ambiguity with intersection types and method references |
| - [`KT-16249`](https://youtrack.jetbrains.com/issue/KT-16249) Can't call generic method with overloaded method reference when non-generic overload exists |
| - [`KT-16421`](https://youtrack.jetbrains.com/issue/KT-16421) Remove @ParameterName annotation from diagnostic messages |
| - [`KT-16480`](https://youtrack.jetbrains.com/issue/KT-16480) Wrong "Type mismatch" for variable as function call |
| - [`KT-16591`](https://youtrack.jetbrains.com/issue/KT-16591) Type inferencing doesn't consider common base class of T of multiple Foo<T> function parameters |
| - [`KT-16678`](https://youtrack.jetbrains.com/issue/KT-16678) Overload resolution ambiguity on println() |
| - [`KT-16844`](https://youtrack.jetbrains.com/issue/KT-16844) Recursive dependency] (DeferredType) error on code generation. |
| - [`KT-16869`](https://youtrack.jetbrains.com/issue/KT-16869) Cannot infer type parameter S in fun <S, T : S?> f(x: S, g: (S) -> T): T |
| - [`KT-17018`](https://youtrack.jetbrains.com/issue/KT-17018) "Rewrite at slice LEXICAL_SCOPE" for 'when' with function reference inside lambda |
| - [`KT-17048`](https://youtrack.jetbrains.com/issue/KT-17048) Compilation exception: error type encountered in some combination of when/elvis with multiple inheritance |
| - [`KT-17340`](https://youtrack.jetbrains.com/issue/KT-17340) Type inference failed on overloaded method reference with expected KFunction |
| - [`KT-17386`](https://youtrack.jetbrains.com/issue/KT-17386) Smart cast on LHS of callable reference doesn't work if expected type is nullable |
| - [`KT-17487`](https://youtrack.jetbrains.com/issue/KT-17487) ReenteringLazyValueComputationException for interface with a subclass that has a property of interface type |
| - [`KT-17552`](https://youtrack.jetbrains.com/issue/KT-17552) Call completed not running for elvis as last expression in lambda |
| - [`KT-17799`](https://youtrack.jetbrains.com/issue/KT-17799) Smart cast doesn't work for callable reference (colon-colon operator) |
| - [`KT-17968`](https://youtrack.jetbrains.com/issue/KT-17968) More type inference problems with Streams.collect |
| - [`KT-17995`](https://youtrack.jetbrains.com/issue/KT-17995) No type mismatch with empty `when` expression inside lambda |
| - [`KT-18002`](https://youtrack.jetbrains.com/issue/KT-18002) Issue with star projection for generic type with recursive upper bound |
| - [`KT-18014`](https://youtrack.jetbrains.com/issue/KT-18014) Cannot use Comparator.comparing |
| - [`KT-18080`](https://youtrack.jetbrains.com/issue/KT-18080) Type inference failed for generic method reference argument |
| - [`KT-18192`](https://youtrack.jetbrains.com/issue/KT-18192) Type inference fails for some nested generic type structures |
| - [`KT-18207`](https://youtrack.jetbrains.com/issue/KT-18207) Unexpected attempt to smart cast causes compile error |
| - [`KT-18379`](https://youtrack.jetbrains.com/issue/KT-18379) Type inference failed although explicit specified |
| - [`KT-18401`](https://youtrack.jetbrains.com/issue/KT-18401) Type mismatch when inferring out type parameter (related to callable reference) |
| - [`KT-18481`](https://youtrack.jetbrains.com/issue/KT-18481) ReenteringLazyValueComputationException for recursive const declaration without explicit type |
| - [`KT-18541`](https://youtrack.jetbrains.com/issue/KT-18541) Prohibit "tailrec" modifier on open functions |
| - [`KT-18790`](https://youtrack.jetbrains.com/issue/KT-18790) function take the parameterized type with multi-bounds can't working |
| - [`KT-19139`](https://youtrack.jetbrains.com/issue/KT-19139) Kotlin build error in Android Studio on << intent.putExtra(“string”, it.getString(“string”) >> inside "else if" block |
| - [`KT-19751`](https://youtrack.jetbrains.com/issue/KT-19751) Nested conditionals break type inference when multiple types are possible for the expression |
| - [`KT-19880`](https://youtrack.jetbrains.com/issue/KT-19880) An overload with nullable parameter is not resolved due to a smart cast attempt after assignment |
| - [`KT-19884`](https://youtrack.jetbrains.com/issue/KT-19884) type inference with type parameter |
| - [`KT-20226`](https://youtrack.jetbrains.com/issue/KT-20226) Return type 'Any' inferred for lambda with early return with integer literal in one of possible return values |
| - [`KT-20656`](https://youtrack.jetbrains.com/issue/KT-20656) Callable reference breaks smart cast for next statement |
| - [`KT-20734`](https://youtrack.jetbrains.com/issue/KT-20734) Invalid "Smart-cast impossible" when there are applicable extension and semi-applicable member |
| - [`KT-20817`](https://youtrack.jetbrains.com/issue/KT-20817) Coroutine builder type inference does not take smart casts into account (confusing) |
| - [`KT-21060`](https://youtrack.jetbrains.com/issue/KT-21060) ReenteringLazyValueComputationException during type inference |
| - [`KT-21396`](https://youtrack.jetbrains.com/issue/KT-21396) if-else with a branch of type Nothing fails to infer receiver type |
| - [`KT-21463`](https://youtrack.jetbrains.com/issue/KT-21463) Compiler doesn't take into accout a type parameter upper bound if a corresponding type argument is in projection |
| - [`KT-21607`](https://youtrack.jetbrains.com/issue/KT-21607) Type inference fails with intermediate function |
| - [`KT-21694`](https://youtrack.jetbrains.com/issue/KT-21694) Type inference failed for ObservableList |
| - [`KT-22012`](https://youtrack.jetbrains.com/issue/KT-22012) Kotlin type deduction does not handle Java's <? super T> constructs |
| - [`KT-22022`](https://youtrack.jetbrains.com/issue/KT-22022) ReenteringLazyValueComputationException when having cyclic references to static variables |
| - [`KT-22032`](https://youtrack.jetbrains.com/issue/KT-22032) Multiple type parameter bounds & smart casts |
| - [`KT-22043`](https://youtrack.jetbrains.com/issue/KT-22043) Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4 |
| - [`KT-22070`](https://youtrack.jetbrains.com/issue/KT-22070) Type inference issue with platform types and SAM conversion |
| - [`KT-22474`](https://youtrack.jetbrains.com/issue/KT-22474) Type safety problem because of incorrect subtyping for intersection types |
| - [`KT-22636`](https://youtrack.jetbrains.com/issue/KT-22636) Anonymous function can be passed as a suspending one, failing at runtime |
| - [`KT-22723`](https://youtrack.jetbrains.com/issue/KT-22723) Inconsistent behavior of floating-point number comparisons |
| - [`KT-22775`](https://youtrack.jetbrains.com/issue/KT-22775) Type inference failed when yielding smartcasted not null value from `sequence` |
| - [`KT-22885`](https://youtrack.jetbrains.com/issue/KT-22885) Broken type safety with function variables caused by wrong subtyping check that includes intersection types |
| - [`KT-23141`](https://youtrack.jetbrains.com/issue/KT-23141) Cannot resolve between two functions when only one of them accepts nullable parameter |
| - [`KT-23156`](https://youtrack.jetbrains.com/issue/KT-23156) IDEA asking me to remove uninferable explicit type signature |
| - [`KT-23391`](https://youtrack.jetbrains.com/issue/KT-23391) Bogus type inference error with smart cast, synthetic property and star projection |
| - [`KT-23475`](https://youtrack.jetbrains.com/issue/KT-23475) Implicit invoke on property with generic functional return type resolves incorrectly |
| - [`KT-23482`](https://youtrack.jetbrains.com/issue/KT-23482) Incorrect frontend behaviour for not inferred type for generic property with function type as result |
| - [`KT-23677`](https://youtrack.jetbrains.com/issue/KT-23677) Incorrect error diagnostic for return types that coerced to 'Unit' inside lambda |
| - [`KT-23748`](https://youtrack.jetbrains.com/issue/KT-23748) Erroneous type mismatch when call with @Exact annotation depends on non-fixed type variable |
| - [`KT-23755`](https://youtrack.jetbrains.com/issue/KT-23755) Nested lambdas with nested types can cause false USELESS_CAST warning |
| - [`KT-23791`](https://youtrack.jetbrains.com/issue/KT-23791) Explicit type argument leads to an error, while candidate is picked correctly without it |
| - [`KT-23992`](https://youtrack.jetbrains.com/issue/KT-23992) Target prefixes for annotations on supertype list elements are not checked |
| - [`KT-24143`](https://youtrack.jetbrains.com/issue/KT-24143) Type-checking error for generic functions |
| - [`KT-24217`](https://youtrack.jetbrains.com/issue/KT-24217) Type inference for generic functions reference problem. |
| - [`KT-24237`](https://youtrack.jetbrains.com/issue/KT-24237) Uninferred type parameter on variable with multiple smart casts in elvis |
| - [`KT-24317`](https://youtrack.jetbrains.com/issue/KT-24317) Unnecessary non-null assertion inspection shown |
| - [`KT-24341`](https://youtrack.jetbrains.com/issue/KT-24341) Compiler exception instead of error about "upper bound violated" |
| - [`KT-24355`](https://youtrack.jetbrains.com/issue/KT-24355) Overload resolution ambiguity due to unstable smartcast |
| - [`KT-24458`](https://youtrack.jetbrains.com/issue/KT-24458) Cannot solve “Conditional branch result is implicitly cast to Any” with List |
| - [`KT-24493`](https://youtrack.jetbrains.com/issue/KT-24493) Incorrect error about Array<Nothing> unsupported |
| - [`KT-24886`](https://youtrack.jetbrains.com/issue/KT-24886) Type inference failure in an if-else_if-else |
| - [`KT-24918`](https://youtrack.jetbrains.com/issue/KT-24918) type inference not good enough for return type with involved if statement |
| - [`KT-24920`](https://youtrack.jetbrains.com/issue/KT-24920) Type inference failure when using RxJava compose |
| - [`KT-24993`](https://youtrack.jetbrains.com/issue/KT-24993) Inference for buildSequence/yield doesn't work for labeled lambdas |
| - [`KT-25063`](https://youtrack.jetbrains.com/issue/KT-25063) List of Arrays - wrong type inferred if nullable involved |
| - [`KT-25268`](https://youtrack.jetbrains.com/issue/KT-25268) Incorrect type inference (least upper bound of the types) in exhaustive when for Number |
| - [`KT-25294`](https://youtrack.jetbrains.com/issue/KT-25294) Reactors Mono map function with Kotlin |
| - [`KT-25306`](https://youtrack.jetbrains.com/issue/KT-25306) Make f(a = arrayOf(x)) equivalent to f(a = *arrayOf(x)) |
| - [`KT-25342`](https://youtrack.jetbrains.com/issue/KT-25342) Type inference: lazy with generic fails to infer |
| - [`KT-25434`](https://youtrack.jetbrains.com/issue/KT-25434) Too eager smartcast cause type mismatch |
| - [`KT-25585`](https://youtrack.jetbrains.com/issue/KT-25585) "Rewrite at slice LEXICAL_SCOPE" for `if` expression with callable reference inside lambda |
| - [`KT-25656`](https://youtrack.jetbrains.com/issue/KT-25656) Short-hand array literal notation type inference fails in nested annotations |
| - [`KT-25675`](https://youtrack.jetbrains.com/issue/KT-25675) `return when` leads to compiler error |
| - [`KT-25721`](https://youtrack.jetbrains.com/issue/KT-25721) Type inference does not work in nested try catch |
| - [`KT-25827`](https://youtrack.jetbrains.com/issue/KT-25827) NullPointerException in setResultingSubstitutor with a generic base class |
| - [`KT-25841`](https://youtrack.jetbrains.com/issue/KT-25841) Collection type is inferred as Collection<Any> if the values returned from `map` function have an intersection common type |
| - [`KT-25942`](https://youtrack.jetbrains.com/issue/KT-25942) Pass a parameter to generic function with several upper bounds |
| - [`KT-26157`](https://youtrack.jetbrains.com/issue/KT-26157) Failed type inference for `Delegates.observable` parameter with a nullable property |
| - [`KT-26264`](https://youtrack.jetbrains.com/issue/KT-26264) No smart cast on implicit receiver extension function call |
| - [`KT-26638`](https://youtrack.jetbrains.com/issue/KT-26638) Check for repeatablilty of annotations doesn't take into account annotations with use-site target |
| - [`KT-26698`](https://youtrack.jetbrains.com/issue/KT-26698) OnlyInputTypes doesn't work in presence of upper bound constraint |
| - [`KT-26704`](https://youtrack.jetbrains.com/issue/KT-26704) Correct variable-as-function call fails to compile in case of function type dependent on variable type |
| - [`KT-27440`](https://youtrack.jetbrains.com/issue/KT-27440) Infer lambda parameter type before lambda analysis in common system |
| - [`KT-27464`](https://youtrack.jetbrains.com/issue/KT-27464) False negative type mismatch when a non-null assertion is used on a top-level `var` mutable variable |
| - [`KT-27606`](https://youtrack.jetbrains.com/issue/KT-27606) Incorrect type inference when common supertype of enum classes is involved |
| - [`KT-27722`](https://youtrack.jetbrains.com/issue/KT-27722) mapNotNull on List<Result<T>> fails if T is not subtype of Any |
| - [`KT-27781`](https://youtrack.jetbrains.com/issue/KT-27781) ReenteringLazyValueComputationException for anonymous object property referring to itself in overridden method |
| - [`KT-27799`](https://youtrack.jetbrains.com/issue/KT-27799) Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects |
| - [`KT-28083`](https://youtrack.jetbrains.com/issue/KT-28083) Nothing-call smart cast of a variable that a lambda returns does not affect the lambda's return type |
| - [`KT-28111`](https://youtrack.jetbrains.com/issue/KT-28111) Type inference fails for return type of lambda with constrained generic |
| - [`KT-28242`](https://youtrack.jetbrains.com/issue/KT-28242) Not-null assertion operator doesn't affect smartcast types |
| - [`KT-28264`](https://youtrack.jetbrains.com/issue/KT-28264) Resulting type of a safe call should produce type that is intersected with Any |
| - [`KT-28305`](https://youtrack.jetbrains.com/issue/KT-28305) "Error type encountered" with elvis operator, type argument and explicit `Any` type |
| - [`KT-28319`](https://youtrack.jetbrains.com/issue/KT-28319) "resultingDescriptor shouldn't be null" for a star projection base class |
| - [`KT-28334`](https://youtrack.jetbrains.com/issue/KT-28334) Smartcast doesn't work if original type is type with star projection and there was already another smartcast |
| - [`KT-28370`](https://youtrack.jetbrains.com/issue/KT-28370) Var not-null smartcasts are wrong if reassignments are used inside catch section (in try-catch) or try section (in try-finally) |
| - [`KT-28424`](https://youtrack.jetbrains.com/issue/KT-28424) Type annotations are not analyzed properly in several cases |
| - [`KT-28584`](https://youtrack.jetbrains.com/issue/KT-28584) Complex condition fails smart cast |
| - [`KT-28614`](https://youtrack.jetbrains.com/issue/KT-28614) "Error type encountered: UninferredParameterTypeConstructor" |
| - [`KT-28726`](https://youtrack.jetbrains.com/issue/KT-28726) Recursion in type inference causes ReenteringLazyValueComputationException |
| - [`KT-28837`](https://youtrack.jetbrains.com/issue/KT-28837) SAM conversion doesn't work for arguments of members imported from object |
| - [`KT-28873`](https://youtrack.jetbrains.com/issue/KT-28873) Function reference resolution ambiguity is not reported |
| - [`KT-28999`](https://youtrack.jetbrains.com/issue/KT-28999) Prohibit type parameters for anonymous objects |
| - [`KT-28951`](https://youtrack.jetbrains.com/issue/KT-28951) "Error type encountered" with elvis operator, type argument and explicit `Any` type |
| - [`KT-29014`](https://youtrack.jetbrains.com/issue/KT-29014) Unclear diagnostic for conditional branches coercion with multiple root interfaces and no common superclass |
| - [`KT-29079`](https://youtrack.jetbrains.com/issue/KT-29079) `ByteArray.let(::String)` can not compile as the callable reference is resolved before the outer call |
| - [`KT-29258`](https://youtrack.jetbrains.com/issue/KT-29258) Incorrect return type is used for analysis of an extension lambda (if its type is used as a generic parameter) |
| - [`KT-29330`](https://youtrack.jetbrains.com/issue/KT-29330) NI: Multiple duplicate error messages in IDE popup with lambda argument |
| - [`KT-29402`](https://youtrack.jetbrains.com/issue/KT-29402) Missed INLINE_FROM_HIGHER_PLATFORM diagnostic if inline function called from Derived class |
| - [`KT-29515`](https://youtrack.jetbrains.com/issue/KT-29515) type inference fails to infer T of KFunction0 for most types |
| - [`KT-29712`](https://youtrack.jetbrains.com/issue/KT-29712) Incorrect compiler warning, "No cast needed" for recursive type bound |
| - [`KT-29876`](https://youtrack.jetbrains.com/issue/KT-29876) ReenteringLazyValueComputationException with usage of property inside lambda during assignment to that property |
| - [`KT-29911`](https://youtrack.jetbrains.com/issue/KT-29911) Not-null smart cast fails inside inline lambda after safe call on generic variable with nullable upper bound |
| - [`KT-29943`](https://youtrack.jetbrains.com/issue/KT-29943) Callable reference resolution ambiguity between a property and a function is reported incorrectly in function calls expecting KProperty1 |
| - [`KT-29949`](https://youtrack.jetbrains.com/issue/KT-29949) Cannot chose among overload as soon as nullable type is involved |
| - [`KT-30151`](https://youtrack.jetbrains.com/issue/KT-30151) Any instead of Number is inferred as common super type of Int and Double |
| - [`KT-30176`](https://youtrack.jetbrains.com/issue/KT-30176) Compiler can't infer correct type argument which blocks overload resolution |
| - [`KT-30240`](https://youtrack.jetbrains.com/issue/KT-30240) Can't infer intersection type for a type variable with several bounds |
| - [`KT-30278`](https://youtrack.jetbrains.com/issue/KT-30278) Retain star projections in typeOf |
| - [`KT-30394`](https://youtrack.jetbrains.com/issue/KT-30394) Different behaviour in type inferences (bug in the old inference) when cast of variable of nullable type parameter to not-null is used |
| - [`KT-30496`](https://youtrack.jetbrains.com/issue/KT-30496) Wrong infix generic extension function is chosen for `null` receiver |
| - [`KT-30550`](https://youtrack.jetbrains.com/issue/KT-30550) Suspend modifier on a functional type changes resolution of return type |
| - [`KT-30892`](https://youtrack.jetbrains.com/issue/KT-30892) IllegalStateException(UninferredParameterTypeConstructor) with return references to local function from if-else expression |
| - [`KT-30947`](https://youtrack.jetbrains.com/issue/KT-30947) No smart cast on accessing generic class member with upper-bounded type argument |
| - [`KT-31102`](https://youtrack.jetbrains.com/issue/KT-31102) Type mismatch in mixing lambda and callable reference |
| - [`KT-31151`](https://youtrack.jetbrains.com/issue/KT-31151) "IllegalStateException: Error type encountered" with elvis, when and inheritance |
| - [`KT-31219`](https://youtrack.jetbrains.com/issue/KT-31219) Type mismatch for delegated property depending on anonymous object |
| - [`KT-31290`](https://youtrack.jetbrains.com/issue/KT-31290) overload resolution ambiguity with Iterable<T>.mapTo() |
| - [`KT-31352`](https://youtrack.jetbrains.com/issue/KT-31352) JvmName can't eliminate platform declaration clash of annotated properties |
| - [`KT-31532`](https://youtrack.jetbrains.com/issue/KT-31532) Type inference for complex last expression in lambda |
| - [`KT-31540`](https://youtrack.jetbrains.com/issue/KT-31540) Change initialization order of default values for tail recursive optimized functions |
| - [`KT-31594`](https://youtrack.jetbrains.com/issue/KT-31594) No SETTER_PROJECTED_OUT diagnostic on synthetic properties from Java |
| - [`KT-31630`](https://youtrack.jetbrains.com/issue/KT-31630) TYPE_INFERENCE_PARAMETER_CONSTRAINT_ERROR for generic function with callable reference argument |
| - [`KT-31654`](https://youtrack.jetbrains.com/issue/KT-31654) False unnecessary non-null assertion (!!) warning inside yield call |
| - [`KT-31679`](https://youtrack.jetbrains.com/issue/KT-31679) NI: Unresolved reference with delegated property and anonymous object |
| - [`KT-31739`](https://youtrack.jetbrains.com/issue/KT-31739) Overload resolution ambiguity in generic function call with lambda arguments that take different parameter types |
| - [`KT-31923`](https://youtrack.jetbrains.com/issue/KT-31923) Outer finally block inserted before return instruction is not excluded from catch interval of inner try (without finally) block |
| - [`KT-31968`](https://youtrack.jetbrains.com/issue/KT-31968) New inference is using a more common system to infer types from nested elvis call than OI |
| - [`KT-31978`](https://youtrack.jetbrains.com/issue/KT-31978) NI: changed precedence of elvis operator relative to equality operator |
| - [`KT-32026`](https://youtrack.jetbrains.com/issue/KT-32026) Infer return type of @PolymorphicSignature method to void if no expected type is given |
| - [`KT-32087`](https://youtrack.jetbrains.com/issue/KT-32087) "Remove explicit type arguments" inspection when function creates a lambda that calls a function with type argument |
| - [`KT-32097`](https://youtrack.jetbrains.com/issue/KT-32097) NI: NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE when using awaitClose in channelFlow builder |
| - [`KT-32098`](https://youtrack.jetbrains.com/issue/KT-32098) Kotlin 1.3.40 type inference mismatch between the IDE and the compiler |
| - [`KT-32151`](https://youtrack.jetbrains.com/issue/KT-32151) Return arguments of lambda are resolved in common system while in OI aren't |
| - [`KT-32165`](https://youtrack.jetbrains.com/issue/KT-32165) Cannot use 'Nothing' as reified type parameter, |
| - [`KT-32196`](https://youtrack.jetbrains.com/issue/KT-32196) Inconsistency between compiler and inspection with mapNotNull |
| - [`KT-32203`](https://youtrack.jetbrains.com/issue/KT-32203) NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE warning false-positive |
| - [`KT-32249`](https://youtrack.jetbrains.com/issue/KT-32249) New inference breaks generic property delegate resolution |
| - [`KT-32250`](https://youtrack.jetbrains.com/issue/KT-32250) New Type Inference fails for nullable field |
| - [`KT-32262`](https://youtrack.jetbrains.com/issue/KT-32262) Type inference failed in presence of @JvmSuppressWildcards |
| - [`KT-32267`](https://youtrack.jetbrains.com/issue/KT-32267) NI: "Overload resolution ambiguity. All these functions match." with KFunction |
| - [`KT-32284`](https://youtrack.jetbrains.com/issue/KT-32284) False positive "Redundant lambda arrow" with extension function returning generic with lambda type argument |
| - [`KT-32290`](https://youtrack.jetbrains.com/issue/KT-32290) New Inference: old inference fails on nullable lambda from if-expression |
| - [`KT-32306`](https://youtrack.jetbrains.com/issue/KT-32306) False positive `Remove explicit type arguments` when using generic return argument from lambda for delegated property |
| - [`KT-32358`](https://youtrack.jetbrains.com/issue/KT-32358) NI: Smart cast doesn't work with inline function after elvis operator |
| - [`KT-32383`](https://youtrack.jetbrains.com/issue/KT-32383) NI: listOf(…) infers to invalid type if different enums implementing the same interface are involved |
| - [`KT-32397`](https://youtrack.jetbrains.com/issue/KT-32397) OI can't infer types when there are different lower and upper bounds in common system |
| - [`KT-32399`](https://youtrack.jetbrains.com/issue/KT-32399) OI can't choose candidate with different lower and upper bounds |
| - [`KT-32425`](https://youtrack.jetbrains.com/issue/KT-32425) No coercion to Unit by a return type of callable expression argument |
| - [`KT-32431`](https://youtrack.jetbrains.com/issue/KT-32431) Nothing inferred for upper bound in parametric class |
| - [`KT-32449`](https://youtrack.jetbrains.com/issue/KT-32449) IDE fails to report error: Expected type mismatch |
| - [`KT-32462`](https://youtrack.jetbrains.com/issue/KT-32462) NI: "AssertionError: No resolved call" with callable reference |
| - [`KT-32497`](https://youtrack.jetbrains.com/issue/KT-32497) Compiler Type inference fails when inferring type parameters ("Generics") - IDE inference works |
| - [`KT-32507`](https://youtrack.jetbrains.com/issue/KT-32507) IntelliJ Kotlin plugin not recognizing smart cast to non-nullable type |
| - [`KT-32501`](https://youtrack.jetbrains.com/issue/KT-32501) type inference should infer nullable type if non-nullable doesn't work |
| - [`KT-32527`](https://youtrack.jetbrains.com/issue/KT-32527) Cast required for Sequence.map when mapping between disjoint types |
| - [`KT-32548`](https://youtrack.jetbrains.com/issue/KT-32548) OVERLOAD_RESOLUTION_AMBIGUITY with platform generic types |
| - [`KT-32595`](https://youtrack.jetbrains.com/issue/KT-32595) NI: Overload resolution ambiguity for member function with type parameter with upper bounds and lambda parameter |
| - [`KT-32598`](https://youtrack.jetbrains.com/issue/KT-32598) Kotlin 1.3.41 type inference problem |
| - [`KT-32654`](https://youtrack.jetbrains.com/issue/KT-32654) Non-applicable call for builder inference with coroutines |
| - [`KT-32655`](https://youtrack.jetbrains.com/issue/KT-32655) Kotlin compiler and IDEA plugin disagree on type |
| - [`KT-32686`](https://youtrack.jetbrains.com/issue/KT-32686) New type inference algorithm infers wrong type when return type of `when` expression has a type parameter, and it's not specified in all cases |
| - [`KT-32788`](https://youtrack.jetbrains.com/issue/KT-32788) No smartcast for an implicit "this" in old inference |
| - [`KT-32792`](https://youtrack.jetbrains.com/issue/KT-32792) Bug in new type inference algorithm for Android Studio |
| - [`KT-32800`](https://youtrack.jetbrains.com/issue/KT-32800) Problem with inlined getValue in Delegates, IDEA does not detect problem, but code doesn't compile |
| - [`KT-32802`](https://youtrack.jetbrains.com/issue/KT-32802) Odd behaviour with smart-casting in exception block |
| - [`KT-32850`](https://youtrack.jetbrains.com/issue/KT-32850) Invalid suggestion in Kotlin code |
| - [`KT-32866`](https://youtrack.jetbrains.com/issue/KT-32866) tests in Atrium do not compile with new type inference |
| - [`KT-33012`](https://youtrack.jetbrains.com/issue/KT-33012) Proper capturing of star projections with recursive types |
| - [`KT-33102`](https://youtrack.jetbrains.com/issue/KT-33102) Fake overrides aren't created for properties |
| - [`KT-33152`](https://youtrack.jetbrains.com/issue/KT-33152) Type inference fails when lambda with generic argument type is present |
| - [`KT-33166`](https://youtrack.jetbrains.com/issue/KT-33166) NI: TYPE_MISMATCH for specific case with `when` expression and one branch throwing exception |
| - [`KT-33171`](https://youtrack.jetbrains.com/issue/KT-33171) TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER with object convention invoke direct call on property delegation |
| - [`KT-33240`](https://youtrack.jetbrains.com/issue/KT-33240) Generated overloads for @JvmOverloads on open methods should be final |
| - [`KT-33545`](https://youtrack.jetbrains.com/issue/KT-33545) NI: Error type encountered: NonFixed: TypeVariable(T) (StubType) |
| - [`KT-33988`](https://youtrack.jetbrains.com/issue/KT-33988) Low priority candidates doesn't match when others fail |
| - [`KT-34128`](https://youtrack.jetbrains.com/issue/KT-34128) Internal compiler error ReenteringLazyValueComputationException in the absence of right parenthesis |
| - [`KT-34140`](https://youtrack.jetbrains.com/issue/KT-34140) Function with contract doesn't smartcast return value in lambda |
| - [`KT-34314`](https://youtrack.jetbrains.com/issue/KT-34314) There is no an error diagnostic about type inference failed (impossible to infer type parameters) on callable references |
| - [`KT-34335`](https://youtrack.jetbrains.com/issue/KT-34335) A lambda argument without a type specifier is inferred to Nothing, if it's passed to a function, declaration of which contains vararg (e.g. Any) |
| - [`KT-34501`](https://youtrack.jetbrains.com/issue/KT-34501) if-expression infers `Any` when `Number?` is expected |
| - [`KT-34708`](https://youtrack.jetbrains.com/issue/KT-34708) Couldn't transform method node: emit$$forInline (try-catch in a Flow.map) |
| - [`KT-34729`](https://youtrack.jetbrains.com/issue/KT-34729) NI: type mismatch error is missed for generic higher-order functions |
| - [`KT-34830`](https://youtrack.jetbrains.com/issue/KT-34830) Type inference fails when using an extension method with "identical JVM signature" as method reference |
| - [`KT-34857`](https://youtrack.jetbrains.com/issue/KT-34857) "Illegal resolved call to variable with invoke" with operator resolved to extension property `invoke` |
| - [`KT-34891`](https://youtrack.jetbrains.com/issue/KT-34891) CompilationException: Failed to generate expression: KtLambdaExpression (Error type encountered) |
| - [`KT-34925`](https://youtrack.jetbrains.com/issue/KT-34925) MPP, IDE: False positive warning NO_REFLECTION_IN_CLASS_PATH in common code |
| - [`KT-35020`](https://youtrack.jetbrains.com/issue/KT-35020) "Type checking has run into a recursive problem" for overloaded generic function implemented using expression body syntax |
| - [`KT-35064`](https://youtrack.jetbrains.com/issue/KT-35064) NI: The new inference has overload resolution ambiguity on passing a callable reference for extension functions (> 1 candidates) |
| - [`KT-35207`](https://youtrack.jetbrains.com/issue/KT-35207) Incorrect generic signature in annotations when KClass is used as a generic parameter |
| - [`KT-35210`](https://youtrack.jetbrains.com/issue/KT-35210) NI: OnlyInputTypes check fails for types with captured ones |
| - [`KT-35213`](https://youtrack.jetbrains.com/issue/KT-35213) NI: overload resolution ambiguity for callable reference with defined LHS |
| - [`KT-35226`](https://youtrack.jetbrains.com/issue/KT-35226) Forbid spread operator in signature-polymorphic calls |
| - [`KT-35306`](https://youtrack.jetbrains.com/issue/KT-35306) `Non-applicable call for builder inference` for nested builder functions which return generic types that are wrapped. |
| - [`KT-35337`](https://youtrack.jetbrains.com/issue/KT-35337) IllegalStateException: Failed to generate expression: KtLambdaExpression |
| - [`KT-35398`](https://youtrack.jetbrains.com/issue/KT-35398) NI, IDE: Duplicate warning message JAVA_CLASS_ON_COMPANION in argument position |
| - [`KT-35469`](https://youtrack.jetbrains.com/issue/KT-35469) Change behavior of signature-polymorphic calls to methods with a single vararg parameter, to avoid wrapping the argument into another array |
| - [`KT-35487`](https://youtrack.jetbrains.com/issue/KT-35487) Type safety problem because of lack of captured conversion against nullable type argument |
| - [`KT-35494`](https://youtrack.jetbrains.com/issue/KT-35494) NI: Multiple duplicate error diagnostics (in IDE popup) with NULL_FOR_NONNULL_TYPE |
| - [`KT-35514`](https://youtrack.jetbrains.com/issue/KT-35514) Type inference failure with `out` type and if-else inside lambda |
| - [`KT-35517`](https://youtrack.jetbrains.com/issue/KT-35517) TYPE_MISMATCH error duplication for not Boolean condition in if-expression |
| - [`KT-35535`](https://youtrack.jetbrains.com/issue/KT-35535) Illegal callable reference receiver allowed in new inference |
| - [`KT-35578`](https://youtrack.jetbrains.com/issue/KT-35578) Diagnostics are sometimes duplicated |
| - [`KT-35602`](https://youtrack.jetbrains.com/issue/KT-35602) NI doesn't approximate star projections properly for self types |
| - [`KT-35658`](https://youtrack.jetbrains.com/issue/KT-35658) NI: Common super type between Inv<A!>, Inv<A?> and Inv<A> is Inv<out A?>, not Inv<A!> (as old inference) |
| - [`KT-35668`](https://youtrack.jetbrains.com/issue/KT-35668) NI: the lack of fixing to Nothing problem (one of the bugs: the lack of smartcast through cast of Nothing? to Nothing after elvis) |
| - [`KT-35679`](https://youtrack.jetbrains.com/issue/KT-35679) Type safety problem because several equal type variables are instantiated with a different types |
| - [`KT-35684`](https://youtrack.jetbrains.com/issue/KT-35684) NI: "IllegalStateException: Expected some types" from builder-inference about intersecting empty types on trivial code |
| - [`KT-35814`](https://youtrack.jetbrains.com/issue/KT-35814) Inference fails to infer common upper type for java types |
| - [`KT-35834`](https://youtrack.jetbrains.com/issue/KT-35834) Do not declare checked exceptions in JVM bytecode when using delegation to Kotlin interfaces |
| - [`KT-35920`](https://youtrack.jetbrains.com/issue/KT-35920) NI allows callable references prohibited in old inference |
| - [`KT-35943`](https://youtrack.jetbrains.com/issue/KT-35943) NI: IllegalStateException: No error about uninferred type parameter |
| - [`KT-35945`](https://youtrack.jetbrains.com/issue/KT-35945) Using Polymorphism and Type Inference the compiler fails having a Type with Type with Type |
| - [`KT-35992`](https://youtrack.jetbrains.com/issue/KT-35992) Wrong overload resolution with explicit type arguments if KFunction and type parameter once nullable and once non-nullable |
| - [`KT-36001`](https://youtrack.jetbrains.com/issue/KT-36001) "IllegalStateException: Error type encountered" with elvis in generic function |
| - [`KT-36002`](https://youtrack.jetbrains.com/issue/KT-36002) KotlinFrontEndException: Exception while analyzing expression |
| - [`KT-36065`](https://youtrack.jetbrains.com/issue/KT-36065) Type inference failed for generic function invoked on implicitly nullable variable created from Java |
| - [`KT-36066`](https://youtrack.jetbrains.com/issue/KT-36066) Type inference problem in compiler |
| - [`KT-36101`](https://youtrack.jetbrains.com/issue/KT-36101) False positive IMPLICIT_NOTHING_AS_TYPE_PARAMETER with suspend lambdas |
| - [`KT-36146`](https://youtrack.jetbrains.com/issue/KT-36146) Drop support of language version 1.0/1.1, deprecate language version 1.2 |
| - [`KT-36192`](https://youtrack.jetbrains.com/issue/KT-36192) Redundant smart cast for overloaded functions |
| - [`KT-36202`](https://youtrack.jetbrains.com/issue/KT-36202) NI: false positive "NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE" with elvis operator in lambda |
| - [`KT-36220`](https://youtrack.jetbrains.com/issue/KT-36220) NI: false positive NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE if one use cannot resolve |
| - [`KT-36221`](https://youtrack.jetbrains.com/issue/KT-36221) NI: UnsupportedOperationException: "no descriptor for type constructor" with vararg parameter when `set` or `get` methods of element passed as function reference |
| - [`KT-36264`](https://youtrack.jetbrains.com/issue/KT-36264) NI: unstable smart cast changes results of call resolution |
| - [`KT-36279`](https://youtrack.jetbrains.com/issue/KT-36279) OI: Type inference fails when omitting explicit name of the lambda parameter |
| - [`KT-36298`](https://youtrack.jetbrains.com/issue/KT-36298) Failure to resolve return type of extension property on function literal |
| - [`KT-36317`](https://youtrack.jetbrains.com/issue/KT-36317) TYPE_MISMATCH diagnostic error duplication for not Boolean condition in do-while-loop-statement |
| - [`KT-36338`](https://youtrack.jetbrains.com/issue/KT-36338) Forbid IR backend usage with unsupported language / API version |
| - [`KT-36371`](https://youtrack.jetbrains.com/issue/KT-36371) Incorrect null check with NI and builder inference in generic context |
| - [`KT-36644`](https://youtrack.jetbrains.com/issue/KT-36644) Stop discrimination of prerelease compiler version in Kotlin plugin |
| - [`KT-36745`](https://youtrack.jetbrains.com/issue/KT-36745) NI: "Expected some types" with unresolved class reference |
| - [`KT-36776`](https://youtrack.jetbrains.com/issue/KT-36776) Treat special constructions (if, when, try) as a usual calls when there is expected type |
| - [`KT-36818`](https://youtrack.jetbrains.com/issue/KT-36818) NI: the lack of smartcast from Nothing returning "when" branch |
| - [`KT-37123`](https://youtrack.jetbrains.com/issue/KT-37123) Cycling lambda signature errors in Observable.combineLatest |
| - [`KT-37146`](https://youtrack.jetbrains.com/issue/KT-37146) Type inference can't resolve plus operator |
| - [`KT-37189`](https://youtrack.jetbrains.com/issue/KT-37189) Wrong type inferred with class with two types as argument |
| - [`KT-37295`](https://youtrack.jetbrains.com/issue/KT-37295) NI: Passing function with wrong returning type by reference is not shown as error |
| - [`KT-37345`](https://youtrack.jetbrains.com/issue/KT-37345) Wrong non-null type assertion when using Sequence and yield |
| - [`KT-37429`](https://youtrack.jetbrains.com/issue/KT-37429) Type inference failed: Not enough information to infer parameter with java streams |
| - [`KT-37480`](https://youtrack.jetbrains.com/issue/KT-37480) "None of the following candidates can be called" when compiling but no error in IDEA |
| |
| ### IDE |
| |
| - [`KT-33573`](https://youtrack.jetbrains.com/issue/KT-33573) IDE runs platform-specific checkers on common code even if the project doesn't target the corresponding platform |
| - [`KT-35823`](https://youtrack.jetbrains.com/issue/KT-35823) IDE settings: deprecated values of language / API version look like regular ones |
| - [`KT-35871`](https://youtrack.jetbrains.com/issue/KT-35871) NPE in LightMethodBuilder |
| - [`KT-36034`](https://youtrack.jetbrains.com/issue/KT-36034) Kotlin 1.3.70 creates file `kotlinCodeInsightSettings.xml` with user-level settings under .idea |
| - [`KT-36084`](https://youtrack.jetbrains.com/issue/KT-36084) "Join lines" should remove trailing comma |
| - [`KT-36460`](https://youtrack.jetbrains.com/issue/KT-36460) IDE highlighting: Undo on inspection breaks analysis inside top-level property initializer |
| - [`KT-36712`](https://youtrack.jetbrains.com/issue/KT-36712) Use new annotation highlighting API |
| - [`KT-36917`](https://youtrack.jetbrains.com/issue/KT-36917) Caret has incorrect position after pressing enter on line with named argument |
| |
| ### IDE. Code Style, Formatting |
| |
| - [`KT-36387`](https://youtrack.jetbrains.com/issue/KT-36387) Formatter: "Chained Function Calls" formats property chains |
| - [`KT-36393`](https://youtrack.jetbrains.com/issue/KT-36393) Incorrect trailing comma insertion for boolean operator expression |
| - [`KT-36466`](https://youtrack.jetbrains.com/issue/KT-36466) Formatter: "Chained Function Calls" with "Wrap first call" wrap single method call |
| |
| ### IDE. Completion |
| |
| - [`KT-16531`](https://youtrack.jetbrains.com/issue/KT-16531) Error type displayed in completion for the result of buildSequence |
| - [`KT-32178`](https://youtrack.jetbrains.com/issue/KT-32178) Autocompletion of 'suspend' should not add the 'fun' keyword when writing a function type |
| - [`KT-34582`](https://youtrack.jetbrains.com/issue/KT-34582) Remove kotlin.coroutines.experimental from autocompletion |
| - [`KT-35258`](https://youtrack.jetbrains.com/issue/KT-35258) Completion problems with enabled `MixedNamedArgumentsInTheirOwnPosition` feature |
| |
| ### IDE. Debugger |
| |
| - [`KT-12016`](https://youtrack.jetbrains.com/issue/KT-12016) Step over inside inline function lambda argument steps into inline function body |
| - [`KT-14296`](https://youtrack.jetbrains.com/issue/KT-14296) Can't step over inlined functions of iterator |
| - [`KT-14869`](https://youtrack.jetbrains.com/issue/KT-14869) Debugger: always steps into inlined lambda after returning from function |
| - [`KT-15652`](https://youtrack.jetbrains.com/issue/KT-15652) Step over inline function call stops at Thread.dispatchUncaughtException() in case of exceptions |
| - [`KT-34905`](https://youtrack.jetbrains.com/issue/KT-34905) Debugger: "Step over" steps into inline function body if lambda call splitted on several lines |
| - [`KT-35354`](https://youtrack.jetbrains.com/issue/KT-35354) ClassCastException in evaluate window |
| |
| ### IDE. Gradle. Script |
| |
| - [`KT-36703`](https://youtrack.jetbrains.com/issue/KT-36703) .gradle.kts: Change text for out of project scripts |
| |
| ### IDE. Hints |
| |
| - [`KT-37537`](https://youtrack.jetbrains.com/issue/KT-37537) IDE is missing or swallowing keystrokes when hint popups are displayed |
| |
| ### IDE. Hints. Parameter Info |
| |
| - [`KT-14523`](https://youtrack.jetbrains.com/issue/KT-14523) Weird parameter info tooltip for map.getValue type arguments |
| |
| ### IDE. Inspections and Intentions |
| |
| #### New Features |
| |
| - [`KT-33384`](https://youtrack.jetbrains.com/issue/KT-33384) Intention to switch between single-line/multi-line lambda |
| - [`KT-34690`](https://youtrack.jetbrains.com/issue/KT-34690) Support intention `Convert lambda to reference` for qualified references |
| - [`KT-35639`](https://youtrack.jetbrains.com/issue/KT-35639) False negative inspection "redundant internal modifier" inside private class |
| - [`KT-36256`](https://youtrack.jetbrains.com/issue/KT-36256) Implement migration for WarningOnMainUnusedParameter |
| - [`KT-36257`](https://youtrack.jetbrains.com/issue/KT-36257) Implement migration for ProhibitRepeatedUseSiteTargetAnnotations |
| - [`KT-36258`](https://youtrack.jetbrains.com/issue/KT-36258) Implement migration for ProhibitUseSiteTargetAnnotationsOnSuperTypes |
| - [`KT-36260`](https://youtrack.jetbrains.com/issue/KT-36260) Implement migration for ProhibitJvmOverloadsOnConstructorsOfAnnotationClasses |
| - [`KT-36261`](https://youtrack.jetbrains.com/issue/KT-36261) Implement migration for ProhibitTypeParametersForLocalVariables |
| - [`KT-36262`](https://youtrack.jetbrains.com/issue/KT-36262) Implement migration for RestrictReturnStatementTarget |
| |
| #### Fixes |
| |
| - [`KT-14001`](https://youtrack.jetbrains.com/issue/KT-14001) "Convert lambda to reference" results in failed type inference |
| - [`KT-14781`](https://youtrack.jetbrains.com/issue/KT-14781) Import of aliased type is inserted when deprecation replacement contains typealias |
| - [`KT-16907`](https://youtrack.jetbrains.com/issue/KT-16907) "Convert to lambda reference" intention is erroneously shown for suspending lambda parameters, producing bad code |
| - [`KT-24869`](https://youtrack.jetbrains.com/issue/KT-24869) False positive inspection "Redundant 'suspend' modifier" |
| - [`KT-24987`](https://youtrack.jetbrains.com/issue/KT-24987) Implicit (unsafe) cast from dynamic to DONT_CARE |
| - [`KT-27511`](https://youtrack.jetbrains.com/issue/KT-27511) "Remove explicit type arguments" suggestion creates incorrect code |
| - [`KT-28415`](https://youtrack.jetbrains.com/issue/KT-28415) False positive inspection "Remove explicit type arguments" with a callable reference |
| - [`KT-30831`](https://youtrack.jetbrains.com/issue/KT-30831) False positive `Remove explicit type arguments` with generic type constructor with init block |
| - [`KT-31050`](https://youtrack.jetbrains.com/issue/KT-31050) False positive "Boolean literal argument without parameter name" inspection using expect class |
| - [`KT-31559`](https://youtrack.jetbrains.com/issue/KT-31559) Type inference failed: Not enough information to infer parameter K |
| - [`KT-32093`](https://youtrack.jetbrains.com/issue/KT-32093) NI: IDE suggests to use property access syntax instead of getter method |
| - [`KT-33098`](https://youtrack.jetbrains.com/issue/KT-33098) False positive "Remove explicit type arguments" with "Enable NI for IDE" and Java generic class constructor invocation with nullable argument |
| - [`KT-33685`](https://youtrack.jetbrains.com/issue/KT-33685) ReplaceWith does not add type parameter for function taking generic lambda with receiver |
| - [`KT-34511`](https://youtrack.jetbrains.com/issue/KT-34511) kotlin.KotlinNullPointerException after using intention Replace Java Map.forEach with Kotlin's forEach for Map with Pairs as keys |
| - [`KT-34686`](https://youtrack.jetbrains.com/issue/KT-34686) False positive "Constructor parameter is never used as a property" if property is used as a reference |
| - [`KT-35451`](https://youtrack.jetbrains.com/issue/KT-35451) Type inference fails after applying false positive inspection "Remove explicit type arguments " |
| - [`KT-35475`](https://youtrack.jetbrains.com/issue/KT-35475) Applying intention "Redundant curly braces in string template" for label references change semantic |
| - [`KT-35528`](https://youtrack.jetbrains.com/issue/KT-35528) Intention `Replace 'when' with 'if'` produces wrong code if expression subject is a variable declaration |
| - [`KT-35588`](https://youtrack.jetbrains.com/issue/KT-35588) Applying "Lift assignment out of 'if'" for if statement that has lambda plus assignment and 'return' leads to type mismatch |
| - [`KT-35604`](https://youtrack.jetbrains.com/issue/KT-35604) Too long quickfix message for "modifier 'open' is not applicable to 'companion object'" |
| - [`KT-35648`](https://youtrack.jetbrains.com/issue/KT-35648) False negative intention "Remove argument name" on named positional arguments |
| - [`KT-36160`](https://youtrack.jetbrains.com/issue/KT-36160) False positive "Constructor has non-null self reference parameter" with vararg parameter of class |
| - [`KT-36171`](https://youtrack.jetbrains.com/issue/KT-36171) intention "Replace 'get' call with indexing operator" works incorrectly with spread operator |
| - [`KT-36255`](https://youtrack.jetbrains.com/issue/KT-36255) Implement migration tool for 1.4 |
| - [`KT-36357`](https://youtrack.jetbrains.com/issue/KT-36357) "Lift assignment out of 'if'" breaks code for oneliner function |
| - [`KT-36360`](https://youtrack.jetbrains.com/issue/KT-36360) OI: False positive "remove explicit type arguments" for SequenceScope leads to compiler failure with "Type inference failed" |
| - [`KT-36369`](https://youtrack.jetbrains.com/issue/KT-36369) "To raw string literal" intention is not available if string content starts with newline symbol \n |
| |
| ### IDE. Multiplatform |
| |
| - [`KT-36978`](https://youtrack.jetbrains.com/issue/KT-36978) Infinite "org.jetbrains.kotlin.idea.caches.resolve.KotlinIdeaResolutionException: Kotlin resolution encountered a problem while analyzing KtFile" exceptions in hierarchical multiplatform projects |
| |
| ### IDE. Navigation |
| |
| - [`KT-30628`](https://youtrack.jetbrains.com/issue/KT-30628) Navigation from Java sources to calls on Kotlin function annotated with @JvmOverloads that have optional arguments omitted leads to decompiled code |
| |
| ### IDE. Refactorings |
| |
| #### New Features |
| |
| - [`KT-26999`](https://youtrack.jetbrains.com/issue/KT-26999) Inspection for unused main parameter in Kotlin 1.3 |
| - [`KT-33339`](https://youtrack.jetbrains.com/issue/KT-33339) Refactor / Move is disabled for Kotlin class selected together with Kotlin file |
| |
| #### Fixes |
| |
| - [`KT-22131`](https://youtrack.jetbrains.com/issue/KT-22131) "Extract method" refactoring treats smart casted variables as non-local |
| - [`KT-24615`](https://youtrack.jetbrains.com/issue/KT-24615) "Extract property" generates useless extension property |
| - [`KT-26047`](https://youtrack.jetbrains.com/issue/KT-26047) Refactor -> Rename: Overridden method renaming in generic class doesn't rename base method |
| - [`KT-26248`](https://youtrack.jetbrains.com/issue/KT-26248) "Refactor -> Inline variable" breaks callable references |
| - [`KT-31401`](https://youtrack.jetbrains.com/issue/KT-31401) Refactor / Inlining function reference in Java method with Runnable argument produces compile error |
| - [`KT-33709`](https://youtrack.jetbrains.com/issue/KT-33709) Inline variable: NONE_APPLICABLE with overloaded generic Java method with SAM conversion |
| - [`KT-34190`](https://youtrack.jetbrains.com/issue/KT-34190) Inline Function: False positive error "not at the end of the body" with anonymous object |
| - [`KT-35235`](https://youtrack.jetbrains.com/issue/KT-35235) Unable to move multiple class files to a different package |
| - [`KT-35463`](https://youtrack.jetbrains.com/issue/KT-35463) ClassCastException during moving .kt file with one single class to the other folder in Android Studio |
| - [`KT-36312`](https://youtrack.jetbrains.com/issue/KT-36312) Refactor Move refactoring to get it ready for MPP-related fixes |
| |
| ### IDE. Run Configurations |
| |
| - [`KT-34503`](https://youtrack.jetbrains.com/issue/KT-34503) "Nothing here" is shown as a drop-down list for "Run test" gutter icon for a multiplatform test with expect/actual parts in platform-agnostic code |
| - [`KT-36093`](https://youtrack.jetbrains.com/issue/KT-36093) Running Gradle java tests are broken for Gradle older than 4.0 (Could not set unknown property 'testClassesDirs' for task ':nonJvmTestIdeSupport') |
| |
| ### JavaScript |
| |
| - [`KT-23284`](https://youtrack.jetbrains.com/issue/KT-23284) Reified type arguments aren't substituted when invoking inline val value |
| |
| ### Libraries |
| |
| - [`KT-26654`](https://youtrack.jetbrains.com/issue/KT-26654) Remove deprecated 'mod' operators |
| - [`KT-27856`](https://youtrack.jetbrains.com/issue/KT-27856) Add contracts to Timing.kt lambdas |
| - [`KT-28356`](https://youtrack.jetbrains.com/issue/KT-28356) Fail fast in Regex.findAll on an invalid startIndex |
| - [`KT-29748`](https://youtrack.jetbrains.com/issue/KT-29748) Declare kotlin.reflect.KType in kotlin-stdlib-common |
| - [`KT-30360`](https://youtrack.jetbrains.com/issue/KT-30360) Deprecate conversions of floating point types to integral types lesser than Int |
| - [`KT-32855`](https://youtrack.jetbrains.com/issue/KT-32855) KTypeParameter is available in common code, but not available in Native |
| - [`KT-35216`](https://youtrack.jetbrains.com/issue/KT-35216) <T : AutoCloseable?, R> T.use and <T : Closeable?, R> T.use should have contracts |
| - [`KT-36082`](https://youtrack.jetbrains.com/issue/KT-36082) JS Regex.find does not throw IndexOutOfBoundsException on invalid start index |
| - [`KT-36083`](https://youtrack.jetbrains.com/issue/KT-36083) Extract kotlin.coroutines.experimental.* packages to a separate compatibility artifact |
| |
| ### Reflection |
| |
| - [`KT-30071`](https://youtrack.jetbrains.com/issue/KT-30071) Implement KTypeProjection.toString |
| - [`KT-35991`](https://youtrack.jetbrains.com/issue/KT-35991) Embed Proguard/R8 rules in kotlin-reflect artifact jar |
| |
| ### Tools. CLI |
| |
| - [`KT-28475`](https://youtrack.jetbrains.com/issue/KT-28475) java.sql module not available in kotlinc scripts on Java 9+ due to use of Bootstrap Classloader |
| |
| ### Tools. Gradle. JS |
| |
| - [`KT-34989`](https://youtrack.jetbrains.com/issue/KT-34989) NodeJs is not re-downloaded if the node binary gets accidentally deleted |
| - [`KT-35465`](https://youtrack.jetbrains.com/issue/KT-35465) Gradle, JS: Gradle tooling for IR compiler |
| - [`KT-36472`](https://youtrack.jetbrains.com/issue/KT-36472) Kotlin/JS Gradle plugin iterates over all Gradle tasks, triggering their lazy configuration |
| - [`KT-36488`](https://youtrack.jetbrains.com/issue/KT-36488) Gradle, JS, IR: Publishing from JS plugin |
| |
| ### Tools. Gradle. Multiplatform |
| |
| - [`KT-37264`](https://youtrack.jetbrains.com/issue/KT-37264) In intermediate common source sets, internals are not visible from their dependsOn source sets during Gradle build |
| |
| ### Tools. Gradle. Native |
| |
| - [`KT-36804`](https://youtrack.jetbrains.com/issue/KT-36804) In a project with Kotlin/Native targets and kotlinx.serialization, IDE import fails: Could not create task '...'. / Cannot change dependencies of configuration after it has been resolved. |
| |
| ### Tools. J2K |
| |
| - [`KT-20120`](https://youtrack.jetbrains.com/issue/KT-20120) J2K: Java 9 `forRemoval` and `since` methods of `Deprecated` are not processed |
| |
| ### Tools. Scripts |
| |
| - [`KT-35414`](https://youtrack.jetbrains.com/issue/KT-35414) Switch for `-Xexpression` to `-expression`/`-e` cli argument syntax for JVM cli compiler in 1.4 |
| |
| |
| ## Recent ChangeLogs: |
| ### [ChangeLog-1.3.X](ChangeLog-1.3.X.md) |
| ### [ChangeLog-1.2.X](ChangeLog-1.2.X.md) |
| ### [ChangeLog-1.1.X](ChangeLog-1.1.X.md) |
| ### [ChangeLog-1.0.X](ChangeLog-1.0.X.md) |
