| # CHANGELOG |
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| <!-- Find: ([^\`/\[])(KT-\d+) --> |
| <!-- Replace: $1[`$2`](https://youtrack.jetbrains.com/issue/$2) --> |
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| ## 1.2-Beta2 |
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| ### Multiplatform projects |
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| #### New Features |
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| - [`KT-20616`](https://youtrack.jetbrains.com/issue/KT-20616) Compiler options for `KotlinCompileCommon` task |
| - [`KT-15522`](https://youtrack.jetbrains.com/issue/KT-15522) Treat expect classes without explicit constructors as not having constructors at all |
| - [`KT-16099`](https://youtrack.jetbrains.com/issue/KT-16099) Do not require obvious override of super-interface methods in non-abstract expect class |
| - [`KT-20618`](https://youtrack.jetbrains.com/issue/KT-20618) Rename `implement` to `expectedBy` in gradle module dependency |
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| #### Fixes |
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| - [`KT-16926`](https://youtrack.jetbrains.com/issue/KT-16926) 'implement' dependency is not transitive when importing gradle project to IDEA |
| - [`KT-20634`](https://youtrack.jetbrains.com/issue/KT-20634) False error about platform project implementing non-common project |
| - [`KT-19170`](https://youtrack.jetbrains.com/issue/KT-19170) Forbid private expected declarations |
| - [`KT-20431`](https://youtrack.jetbrains.com/issue/KT-20431) Prohibit inheritance by delegation in 'expect' classes |
| - [`KT-20540`](https://youtrack.jetbrains.com/issue/KT-20540) Report errors about incompatible constructors of actual class |
| - [`KT-20398`](https://youtrack.jetbrains.com/issue/KT-20398) Do not highlight declarations with not implemented implementations with red during typing |
| - [`KT-19937`](https://youtrack.jetbrains.com/issue/KT-19937) Support "implement expect class" quickfix for nested classes |
| - [`KT-20657`](https://youtrack.jetbrains.com/issue/KT-20657) Actual annotation with all parameters that have default values doesn't match expected annotation with no-arg constructor |
| - [`KT-20680`](https://youtrack.jetbrains.com/issue/KT-20680) No actual class member: inconsistent modality check |
| - [`KT-18756`](https://youtrack.jetbrains.com/issue/KT-18756) multiplatform project: compilation error on implementation of extension property in javascript client module |
| - [`KT-17374`](https://youtrack.jetbrains.com/issue/KT-17374) Too many "expect declaration has no implementation" inspection in IDE in a multi-platform project |
| - [`KT-18455`](https://youtrack.jetbrains.com/issue/KT-18455) Multiplatform project: show gutter Navigate to implementation on expect side of method in the expect class |
| - [`KT-19222`](https://youtrack.jetbrains.com/issue/KT-19222) Useless tooltip on a gutter icon for expect declaration |
| - [`KT-20043`](https://youtrack.jetbrains.com/issue/KT-20043) multiplatform: No H gutter if a class has nested/inner classes inherited from it |
| - [`KT-20164`](https://youtrack.jetbrains.com/issue/KT-20164) expect/actual navigation does not work when actual is a typealias |
| - [`KT-20254`](https://youtrack.jetbrains.com/issue/KT-20254) multiplatform: there is no link between expect and actual classes, if implementation has a constructor when expect doesn't |
| - [`KT-20309`](https://youtrack.jetbrains.com/issue/KT-20309) multiplatform: ClassCastException on mouse hovering on the H gutter of the actual secondary constructor |
| - [`KT-20638`](https://youtrack.jetbrains.com/issue/KT-20638) Context menu in common module: NSEE: "Collection contains no element matching the predicate." at KotlinRunConfigurationProducerKt.findJvmImplementationModule() |
| - [`KT-18919`](https://youtrack.jetbrains.com/issue/KT-18919) multiplatform project: expect keyword is lost on converting to object |
| - [`KT-20008`](https://youtrack.jetbrains.com/issue/KT-20008) multiplatform: Create expect class implementation should add actual keyword at secondary constructors |
| - [`KT-20044`](https://youtrack.jetbrains.com/issue/KT-20044) multiplatform: Create expect class implementation should add actual constructor at primary constructor |
| - [`KT-20135`](https://youtrack.jetbrains.com/issue/KT-20135) "Create expect class implementation" should open created class in editor |
| - [`KT-20163`](https://youtrack.jetbrains.com/issue/KT-20163) multiplatform: it should be possible to create an implementation for overloaded method if for one method implementation is present already |
| - [`KT-20243`](https://youtrack.jetbrains.com/issue/KT-20243) multiplatform: quick fix Create expect interface implementation should add actual keyword at interface members |
| - [`KT-20325`](https://youtrack.jetbrains.com/issue/KT-20325) multiplatform: Quick fix Create actual ... should specify correct classifier name for object, enum class and annotation class |
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| ### Compiler |
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| #### New Features |
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| - [`KT-16028`](https://youtrack.jetbrains.com/issue/KT-16028) Allow to have different bodies of inline functions inlined depending on apiVersion |
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| #### Performance Improvements |
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| - [`KT-20462`](https://youtrack.jetbrains.com/issue/KT-20462) Don't create an array copy for '*<array-constructor-fun>(...)' |
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| #### Fixes |
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| - [`KT-13644`](https://youtrack.jetbrains.com/issue/KT-13644) Information from explicit cast should be used for type inference |
| - [`KT-14697`](https://youtrack.jetbrains.com/issue/KT-14697) Use-site targeted annotation is not correctly loaded from class file |
| - [`KT-17981`](https://youtrack.jetbrains.com/issue/KT-17981) Type parameter for catch parameter possible when exception is nested in generic, but fails in runtime |
| - [`KT-19251`](https://youtrack.jetbrains.com/issue/KT-19251) Stack spilling in constructor arguments breaks Quasar |
| - [`KT-20387`](https://youtrack.jetbrains.com/issue/KT-20387) Wrong argument generated for accessor call of a protected generic 'operator fun get/set' from base class with primitive type as type parameter |
| - [`KT-20491`](https://youtrack.jetbrains.com/issue/KT-20491) Incorrect synthetic accessor generated for a generic base class function specialized with primitive type |
| - [`KT-20651`](https://youtrack.jetbrains.com/issue/KT-20651) "Don't know how to generate outer expression" for enum-values with non-trivial self-closures |
| - [`KT-20752`](https://youtrack.jetbrains.com/issue/KT-20752) Do not register new kinds of smart casts for unstable values |
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| ### IDE |
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| #### New Features |
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| - [`KT-19146`](https://youtrack.jetbrains.com/issue/KT-19146) Parameter hints could be shown for annotation |
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| #### Fixes |
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| - [`KT-19207`](https://youtrack.jetbrains.com/issue/KT-19207) "Configure Kotlin in project" should add "requires kotlin.stdlib" to module-info for Java 9 modules |
| - [`KT-19213`](https://youtrack.jetbrains.com/issue/KT-19213) Formatter/Code Style: space between type parameters and `where` is not inserted |
| - [`KT-19216`](https://youtrack.jetbrains.com/issue/KT-19216) Parameter name hints should not be shown for functional type invocation |
| - [`KT-20448`](https://youtrack.jetbrains.com/issue/KT-20448) Exception in UAST during reference search in J2K |
| - [`KT-20543`](https://youtrack.jetbrains.com/issue/KT-20543) java.lang.ClassCastException on usage of array literals in Spring annotation |
| - [`KT-20709`](https://youtrack.jetbrains.com/issue/KT-20709) Loop in parent structure when converting a LITERAL_STRING_TEMPLATE_ENTRY |
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| ### IDE. Completion |
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| - [`KT-17165`](https://youtrack.jetbrains.com/issue/KT-17165) Support array literals in annotations in completion |
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| ### IDE. Debugger |
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| - [`KT-18775`](https://youtrack.jetbrains.com/issue/KT-18775) Evaluate expression doesn't allow access to properties of private nested objects, including companion |
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| ### IDE. Inspections and Intentions |
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| #### New Features |
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| - [`KT-20108`](https://youtrack.jetbrains.com/issue/KT-20108) Support "add requires directive to module-info.java" quick fix on usages of non-required modules in Kotlin sources |
| - [`KT-20410`](https://youtrack.jetbrains.com/issue/KT-20410) Add inspection for listOf().filterNotNull() to replace it with listOfNotNull() |
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| #### Fixes |
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| - [`KT-16636`](https://youtrack.jetbrains.com/issue/KT-16636) Remove parentheses after deleting the last unused constructor parameter |
| - [`KT-18549`](https://youtrack.jetbrains.com/issue/KT-18549) "Add type" quick fix adds non-primitive Array type for annotation parameters |
| - [`KT-18631`](https://youtrack.jetbrains.com/issue/KT-18631) Inspection to convert emptyArray() to empty literal does not work |
| - [`KT-18773`](https://youtrack.jetbrains.com/issue/KT-18773) Disable "Replace camel-case name with spaces" intention for JS and common projects |
| - [`KT-20183`](https://youtrack.jetbrains.com/issue/KT-20183) AE “Classifier descriptor of a type should be of type ClassDescriptor” on adding element to generic collection in function |
| - [`KT-20315`](https://youtrack.jetbrains.com/issue/KT-20315) "call chain on collection type may be simplified" generates code that does not compile |
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| ### JavaScript |
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| #### Fixes |
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| - [`KT-8285`](https://youtrack.jetbrains.com/issue/KT-8285) JS: don't generate tmp when only need one component |
| - [`KT-8374`](https://youtrack.jetbrains.com/issue/KT-8374) JS: some Double values converts to Int differently on JS and JVM |
| - [`KT-14549`](https://youtrack.jetbrains.com/issue/KT-14549) JS: Non-local returns from secondary constructors don't work |
| - [`KT-15294`](https://youtrack.jetbrains.com/issue/KT-15294) JS: parse error in `js()` function |
| - [`KT-17629`](https://youtrack.jetbrains.com/issue/KT-17629) JS: Equals function (==) returns true for all primitive numeric types |
| - [`KT-17760`](https://youtrack.jetbrains.com/issue/KT-17760) JS: Nothing::class throws error |
| - [`KT-17933`](https://youtrack.jetbrains.com/issue/KT-17933) JS: toString, hashCode method and simplename property of KClass return senseless results for some classes |
| - [`KT-18010`](https://youtrack.jetbrains.com/issue/KT-18010) JS: JsName annotation in interfaces can cause runtime exception |
| - [`KT-18063`](https://youtrack.jetbrains.com/issue/KT-18063) Inlining does not work properly in JS for suspend functions from another module |
| - [`KT-18548`](https://youtrack.jetbrains.com/issue/KT-18548) JS: wrong string interpolation with generic or Any parameters |
| - [`KT-19772`](https://youtrack.jetbrains.com/issue/KT-19772) JS: wrong boxing behavior for open val and final fun inside open class |
| - [`KT-19794`](https://youtrack.jetbrains.com/issue/KT-19794) runtime crash with empty object (Javascript) |
| - [`KT-19818`](https://youtrack.jetbrains.com/issue/KT-19818) JS: generate paths relative to .map file by default (unless "-source-map-prefix" is used) |
| - [`KT-19906`](https://youtrack.jetbrains.com/issue/KT-19906) JS: rename compiler option "-source-map-source-roots" to avoid misleading since sourcemaps have field called "sourceRoot" |
| - [`KT-20287`](https://youtrack.jetbrains.com/issue/KT-20287) Functions don't actually return Unit in Kotlin-JS -> unexpected null problems vs JDK version |
| - [`KT-20451`](https://youtrack.jetbrains.com/issue/KT-20451) KotlinJs - interface function with default parameter, overridden by implementor, can't be found at runtime |
| - [`KT-20527`](https://youtrack.jetbrains.com/issue/KT-20527) JS: use prototype chain to check that object implements kotlin interface |
| - [`KT-20650`](https://youtrack.jetbrains.com/issue/KT-20650) JS: compiler crashes in Java 9 with NoClassDefFoundError |
| - [`KT-20653`](https://youtrack.jetbrains.com/issue/KT-20653) JS: compiler crashes in Java 9 with TranslationRuntimeException |
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| ### Language design |
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| - [`KT-20171`](https://youtrack.jetbrains.com/issue/KT-20171) Deprecate assigning single elements to varargs in named form |
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| ### Libraries |
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| - [`KT-19696`](https://youtrack.jetbrains.com/issue/KT-19696) Provide a way to write multiplatform tests |
| - [`KT-18961`](https://youtrack.jetbrains.com/issue/KT-18961) Closeable.use should call addSuppressed |
| - [`KT-2460`](https://youtrack.jetbrains.com/issue/KT-2460) [`PR-1300`](https://github.com/JetBrains/kotlin/pull/1300) `shuffle` and `fill` extensions for MutableList now also available in JS |
| - [`PR-1230`](https://github.com/JetBrains/kotlin/pull/1230) Add assertSame and assertNotSame methods to kotlin-test |
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| ### Tools. Gradle |
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| - [`KT-20553`](https://youtrack.jetbrains.com/issue/KT-20553) Rename `warningsAsErrors` compiler option to `allWarningsAsErrors` |
| - [`KT-20217`](https://youtrack.jetbrains.com/issue/KT-20217) `src/main/java` and `src/test/java` source directories are no longer included by default in Kotlin/JS and Kotlin/Common projects |
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| ### Tools. Incremental Compile |
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| - [`KT-20654`](https://youtrack.jetbrains.com/issue/KT-20654) AndroidStudio: NSME “PsiJavaModule.getName()Ljava/lang/String” on calling simple Kotlin functions like println(), listOf() |
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| ### Binary Metadata |
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| - [`KT-20547`](https://youtrack.jetbrains.com/issue/KT-20547) Write pre-release flag into class files if language version > LATEST_STABLE |
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| ## Previous releases |
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| This release also includes the fixes and improvements from the previous |
| [`1.2-Beta`](https://github.com/JetBrains/kotlin/blob/1.2-Beta/ChangeLog.md) release. |
