Js frontend: prohibit default values for functions annotated as nativeIndexer.

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onLocalExtensionFun.kt

@@ -18,4 +18,7 @@ fun foo() {
 
     <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>[nativeGetter]
     fun Int.get3(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>, b: Int, c: Any?): String?<!> = "OK"
+
+    [nativeGetter]
+    fun Any.foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Int = 1<!>): Any? = "OK"
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onLocalNativeClassMembers.kt

@@ -41,5 +41,8 @@ fun foo() {
 
         nativeGetter
         fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!> = 0
+
+        nativeGetter
+        fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int? = 0
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onLocalNonNativeClassMembers.kt

@@ -38,5 +38,8 @@ fun foo() {
 
         <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
         fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!><!> = 0
+
+        <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
+        fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Int = 0<!>): Int?<!> = 0
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNativeClassMembers.kt

@@ -63,6 +63,9 @@ class C {
     nativeGetter
     fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!> = 0
 
+    nativeGetter
+    fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int? = 0
+
     class object {
         <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
         fun Int.get(a: String): Int?<!> = 1

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNativeClassMembers.txt

@@ -67,6 +67,7 @@ kotlin.js.native() internal final class B {
 kotlin.js.native() internal final class C {
     public constructor C()
     kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+    kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.String = ...): kotlin.Int?
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
     kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNestedDeclarationsInsideNativeClass.kt

@@ -62,6 +62,9 @@ class A {
 
             nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!> = 0
+
+            nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Number = 1.1<!>): Int? = 0
         }
 
         object obj {
@@ -85,6 +88,9 @@ class A {
 
             nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!> = 0
+
+            nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int? = 0
         }
 
         val anonymous = object {
@@ -108,6 +114,9 @@ class A {
 
             nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!> = 0
+
+            nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int? = 0
         }
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNestedDeclarationsInsideNativeClass.txt

@@ -80,6 +80,7 @@ kotlin.js.native() internal final class A {
         internal final class C {
             public constructor C()
             kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+            kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.Number = ...): kotlin.Int?
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
             kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
             kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?
@@ -94,6 +95,7 @@ kotlin.js.native() internal final class A {
         internal object obj {
             private constructor obj()
             kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+            kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.String = ...): kotlin.Int?
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
             kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
             kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?
@@ -107,6 +109,7 @@ kotlin.js.native() internal final class A {
             public class object <class-object-for-obj> : A.B.obj {
                 private constructor <class-object-for-obj>()
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun bar(/*0*/ a: kotlin.String): kotlin.Int
+                kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun baz(/*0*/ a: kotlin.String = ...): kotlin.Int?
                 public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun get(): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNestedDeclarationsInsideNonNativeClass.kt

@@ -70,6 +70,9 @@ class A {
 
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!><!> = 0
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int?<!> = 0
         }
 
         object obj {
@@ -84,6 +87,9 @@ class A {
 
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!><!> = 0
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Double = 0.0<!>): Int?<!> = 0
         }
 
         val anonymous = object {
@@ -98,6 +104,9 @@ class A {
 
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
             fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!><!> = 0
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
+            fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int?<!> = 0
         }
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNestedDeclarationsInsideNonNativeClass.txt

@@ -86,6 +86,7 @@ internal final class A {
         internal final class C {
             public constructor C()
             kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+            kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.String = ...): kotlin.Int?
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
             kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
             kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?
@@ -97,6 +98,7 @@ internal final class A {
         internal object obj {
             private constructor obj()
             kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+            kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.Double = ...): kotlin.Int?
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
             kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
             kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?
@@ -107,6 +109,7 @@ internal final class A {
             public class object <class-object-for-obj> : A.B.obj {
                 private constructor <class-object-for-obj>()
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun bar(/*0*/ a: kotlin.String): kotlin.Int
+                kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun baz(/*0*/ a: kotlin.Double = ...): kotlin.Int?
                 public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
                 kotlin.js.nativeGetter() internal final override /*1*/ /*fake_override*/ fun get(): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNonNativeClassMembers.kt

@@ -59,4 +59,7 @@ class C {
 
     <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
     fun bar(a: String): <!NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE!>Int<!><!> = 0
+
+    <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeGetter
+    fun baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "foo"<!>): Int?<!> = 0
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onNonNativeClassMembers.txt

@@ -67,6 +67,7 @@ internal final class B {
 internal final class C {
     public constructor C()
     kotlin.js.nativeGetter() internal final fun bar(/*0*/ a: kotlin.String): kotlin.Int
+    kotlin.js.nativeGetter() internal final fun baz(/*0*/ a: kotlin.String = ...): kotlin.Int?
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     kotlin.js.nativeGetter() internal final fun foo(/*0*/ a: kotlin.Int): kotlin.Unit
     kotlin.js.nativeGetter() internal final fun get(): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onToplevelExtensionFun.kt

@@ -9,6 +9,9 @@ fun Int.get2(a: Number): String? = "OK"
 nativeGetter
 fun Int.get3(a: Int): String? = "OK"
 
+nativeGetter
+fun Int.baz(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Int = 0<!>): String? = "OK"
+
 nativeGetter
 fun Int.get(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>): Int? = 1
 

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeGetter/onToplevelExtensionFun.txt

@@ -1,5 +1,6 @@
 package
 
+kotlin.js.nativeGetter() internal fun kotlin.Int.baz(/*0*/ a: kotlin.Int = ...): kotlin.String?
 kotlin.js.nativeGetter() internal fun kotlin.Int.get(/*0*/ a: kotlin.Any): kotlin.Int?
 kotlin.js.nativeGetter() internal fun kotlin.Int.get(/*0*/ a: kotlin.String): kotlin.Int?
 kotlin.js.nativeGetter() internal fun kotlin.Int.get2(): kotlin.String?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onLocalExtensionFun.kt

@@ -18,4 +18,7 @@ fun foo() {
 
     <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>[nativeSetter]
     fun Int.set3(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>, b: Int, c: Any?)<!> {}
+
+    [nativeSetter]
+    fun Any.foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Double = 0.0<!>, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String? = null<!>) = "OK"
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onLocalNativeClassMembers.kt

@@ -41,5 +41,11 @@ fun foo() {
 
         nativeSetter
         fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+
+        [nativeSetter]
+        fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Number = 0.0<!>, v: String) = "OK"
+
+        [nativeSetter]
+        fun boo(a: Number, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>) = "OK"
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onLocalNonNativeClassMembers.kt

@@ -38,5 +38,8 @@ fun foo() {
 
         <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
         fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?)<!> {}
+
+        <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>[nativeSetter]
+        fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Int = 0<!>, v: String)<!> = "OK"
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNativeClassMembers.kt

@@ -62,4 +62,7 @@ class C {
 
     nativeSetter
     fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+
+    [nativeSetter]
+    fun foo(a: Number, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "aa"<!>) = "OK"
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNativeClassMembers.txt

@@ -67,6 +67,7 @@ kotlin.js.native() internal final class B {
 kotlin.js.native() internal final class C {
     public constructor C()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.Number, /*1*/ v: kotlin.String = ...): kotlin.String
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
     kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNestedDeclarationsInsideNativeClass.kt

@@ -62,6 +62,9 @@ class A {
 
             nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+
+            [nativeSetter]
+            fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Double = 0.0<!>, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>) = "OK"
         }
 
         object obj {
@@ -85,6 +88,9 @@ class A {
 
             nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+
+            [nativeSetter]
+            fun foo(a: Int, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>) = "OK"
         }
 
         val anonymous = object {
@@ -108,6 +114,9 @@ class A {
 
             nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+
+            [nativeSetter]
+            fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Number = 0.0<!>, v: String) = "OK"
         }
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNestedDeclarationsInsideNativeClass.txt

@@ -80,6 +80,7 @@ kotlin.js.native() internal final class A {
         internal final class C {
             public constructor C()
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.Double = ..., /*1*/ v: kotlin.String = ...): kotlin.String
             public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
             kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
             kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A.B.A): kotlin.Any?
@@ -94,6 +95,7 @@ kotlin.js.native() internal final class A {
         internal object obj {
             private constructor obj()
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.Int, /*1*/ v: kotlin.String = ...): kotlin.String
             public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
             kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
             kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A.B.A): kotlin.Any?
@@ -107,6 +109,7 @@ kotlin.js.native() internal final class A {
             public class object <class-object-for-obj> : A.B.obj {
                 private constructor <class-object-for-obj>()
                 public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+                kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun foo(/*0*/ a: kotlin.Int, /*1*/ v: kotlin.String = ...): kotlin.String
                 public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
                 kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun set(): kotlin.Any?
                 kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun set(/*0*/ a: A.B.A): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNestedDeclarationsInsideNonNativeClass.kt

@@ -1,27 +1,26 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
-native
 class A {
     class B {
         class A {
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun set(a: String, v: Any?): Any? = null
+            fun set(a: String, v: Any?): Any?<!> = null
 
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun put(a: Number, v: String) {}
+            fun put(a: Number, v: String)<!> {}
 
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun foo(a: Int, v: String) {}
+            fun foo(a: Int, v: String)<!> {}
 
             class object {
-                nativeSetter
+                <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-                fun set(a: String, v: Any?): Any? = null
+                fun set(a: String, v: Any?): Any?<!> = null
 
-                nativeSetter
+                <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-                fun put(a: Number, v: String) {}
+                fun put(a: Number, v: String)<!> {}
 
-                nativeSetter
+                <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-                fun foo(a: Int, v: String) {}
+                fun foo(a: Int, v: String)<!> {}
             }
         }
 
@@ -51,17 +50,20 @@ class A {
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
             fun Int.set3(a: Double, v: String?)<!> = "OK"
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(a: String, v: Any, v2: Any)<!> {}
 
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?)<!> {}
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>[nativeSetter]
+            fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Double = 0.0<!>, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>)<!> = "OK"
         }
 
         object obj {
@@ -74,17 +76,20 @@ class A {
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
             fun Int.set3(a: Double, v: String?)<!> = "OK"
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(a: String, v: Any, v2: Any)<!> {}
 
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?)<!> {}
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>[nativeSetter]
+            fun foo(a: Int, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>)<!> = "OK"
         }
 
         val anonymous = object {
@@ -97,17 +102,20 @@ class A {
             <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
             fun Int.set3(a: Double, v: String?)<!> = "OK"
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>): Any?<!> = null
 
-            <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN, NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
             fun set(a: String, v: Any, v2: Any)<!> {}
 
-            nativeSetter
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
-            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?) {}
+            fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?)<!> {}
+
+            <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>[nativeSetter]
+            fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: Number = 0.0<!>, v: String)<!> = "OK"
         }
     }
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNestedDeclarationsInsideNonNativeClass.txt

@@ -1,6 +1,6 @@
 package 
 
-kotlin.js.native() internal final class A {
+internal final class A {
     public constructor A()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
@@ -80,6 +80,7 @@ kotlin.js.native() internal final class A {
         internal final class C {
             public constructor C()
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.Double = ..., /*1*/ v: kotlin.String = ...): kotlin.String
             public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
             kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
             kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A.B.A): kotlin.Any?
@@ -94,6 +95,7 @@ kotlin.js.native() internal final class A {
         internal object obj {
             private constructor obj()
             public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+            kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.Int, /*1*/ v: kotlin.String = ...): kotlin.String
             public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
             kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
             kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A.B.A): kotlin.Any?
@@ -107,6 +109,7 @@ kotlin.js.native() internal final class A {
             public class object <class-object-for-obj> : A.B.obj {
                 private constructor <class-object-for-obj>()
                 public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+                kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun foo(/*0*/ a: kotlin.Int, /*1*/ v: kotlin.String = ...): kotlin.String
                 public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
                 kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun set(): kotlin.Any?
                 kotlin.js.nativeSetter() internal final override /*1*/ /*fake_override*/ fun set(/*0*/ a: A.B.A): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNonNativeClassMembers.kt

@@ -59,4 +59,7 @@ class C {
 
     <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>nativeSetter
     fun set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: A<!>, v: Any?)<!> {}
+
+    <!NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN!>[nativeSetter]
+    fun foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "0.0"<!>, v: String)<!> = "OK"
 }

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onNonNativeClassMembers.txt

@@ -67,6 +67,7 @@ internal final class B {
 internal final class C {
     public constructor C()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    kotlin.js.nativeSetter() internal final fun foo(/*0*/ a: kotlin.String = ..., /*1*/ v: kotlin.String): kotlin.String
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     kotlin.js.nativeSetter() internal final fun set(): kotlin.Any?
     kotlin.js.nativeSetter() internal final fun set(/*0*/ a: A): kotlin.Any?

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onToplevelExtensionFun.kt

@@ -9,6 +9,9 @@ fun Int.set2(a: Number, v: String?) = "OK"
 nativeSetter
 fun Int.set3(a: Double, v: String?) = "OK"
 
+[nativeSetter]
+fun Any.foo(<!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>a: String = "0.0"<!>, <!NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS!>v: String = "str"<!>) = "OK"
+
 <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
 fun Int.set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: <!UNRESOLVED_REFERENCE!>A<!><!>): Int?<!> = 1
 
@@ -16,4 +19,4 @@ fun Int.set(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: <!UNRESOLVED_REF
 fun Int.set2(): String?<!> = "OK"
 
 <!NATIVE_INDEXER_WRONG_PARAMETER_COUNT!>nativeSetter
-fun Int.set3(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>, b: Int, c: Any?)<!> {}
+fun Int.set3(<!NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER!>a: Any<!>, b: Int, c: Any?)<!> {}

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeSetter/onToplevelExtensionFun.txt

@@ -1,5 +1,6 @@
 package
 
+kotlin.js.nativeSetter() internal fun kotlin.Any.foo(/*0*/ a: kotlin.String = ..., /*1*/ v: kotlin.String = ...): kotlin.String
 kotlin.js.nativeSetter() internal fun kotlin.Int.set(/*0*/ a: [ERROR : A]): kotlin.Int?
 kotlin.js.nativeSetter() internal fun kotlin.Int.set(/*0*/ a: kotlin.String, /*1*/ v: kotlin.Int): kotlin.Unit
 kotlin.js.nativeSetter() internal fun kotlin.Int.set2(): kotlin.String?

js/js.frontend/src/org/jetbrains/k2js/resolve/KotlinJsDeclarationCheckerProvider.kt

@@ -83,6 +83,12 @@ private abstract class AbstractNativeIndexerChecker(
         if (parameters.size() != requiredParametersCount) {
             diagnosticHolder.report(ErrorsJs.NATIVE_INDEXER_WRONG_PARAMETER_COUNT.on(declaration, requiredParametersCount, indexerKind))
         }
+
+        for (parameter in declaration.getValueParameters()) {
+            if (parameter.hasDefaultValue()) {
+                diagnosticHolder.report(ErrorsJs.NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS.on(parameter, indexerKind))
+            }
+        }
     }
 }
 

js/js.frontend/src/org/jetbrains/k2js/resolve/diagnostics/DefaultErrorMessagesJs.kt

@@ -27,6 +27,7 @@ private val DIAGNOSTIC_FACTORY_TO_RENDERER by Delegates.lazy {
         put(ErrorsJs.NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN,
             "Annotation ''{0}'' is allowed only on member functions of declaration annotated as ''kotlin.js.native'' or on toplevel extension functions", Renderers.RENDER_TYPE)
         put(ErrorsJs.NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER, "Native {0}''s first parameter type should be ''kotlin.String'' or subtype of ''kotlin.Number''", Renderers.STRING)
+        put(ErrorsJs.NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS, "Native {0}''s parameter can not have default value", Renderers.STRING)
         put(ErrorsJs.NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE, "Native getter''s return type should be nullable")
         put(ErrorsJs.NATIVE_INDEXER_WRONG_PARAMETER_COUNT, "Expected {0} parameters for native {1}", Renderers.TO_STRING, Renderers.STRING)
         put(ErrorsJs.JSCODE_ERROR, "JavaScript: {0}", Renderers.TO_STRING, Renderers.TO_STRING)

js/js.frontend/src/org/jetbrains/k2js/resolve/diagnostics/ErrorsJs.java

@@ -34,6 +34,7 @@ import static org.jetbrains.jet.lang.diagnostics.Severity.WARNING;
 public interface ErrorsJs {
     DiagnosticFactory1<JetElement, JetType> NATIVE_ANNOTATIONS_ALLOWED_ONLY_ON_MEMBER_OR_EXTENSION_FUN = DiagnosticFactory1.create(ERROR, DECLARATION_SIGNATURE_OR_DEFAULT);
     DiagnosticFactory1<JetElement, String> NATIVE_INDEXER_KEY_SHOULD_BE_STRING_OR_NUMBER = DiagnosticFactory1.create(ERROR, DECLARATION_SIGNATURE_OR_DEFAULT);
+    DiagnosticFactory1<JetElement, String> NATIVE_INDEXER_CAN_NOT_HAVE_DEFAULT_ARGUMENTS = DiagnosticFactory1.create(ERROR, DECLARATION_SIGNATURE_OR_DEFAULT);
     DiagnosticFactory0<JetDeclaration> NATIVE_GETTER_RETURN_TYPE_SHOULD_BE_NULLABLE = DiagnosticFactory0.create(ERROR, DECLARATION_RETURN_TYPE);
     DiagnosticFactory2<JetElement, Integer, String> NATIVE_INDEXER_WRONG_PARAMETER_COUNT = DiagnosticFactory2.create(ERROR, DECLARATION_SIGNATURE_OR_DEFAULT);
     DiagnosticFactory2<JetExpression, String, List<TextRange>> JSCODE_ERROR = DiagnosticFactory2.create(ERROR, JsCodePositioningStrategy.INSTANCE$);