JS: report errors on different external items:

* data classes
* val/var parameters of primary constructors
* enum entry with body
* anonymous `init {}` block in classes

compiler/testData/diagnostics/testsWithJsStdLib/native/anonymousInitializer.kt

@@ -0,0 +1,5 @@
+external class A {
+    <!EXTERNAL_ANONYMOUS_INITIALIZER!>init {
+        noImpl
+    }<!>
+}

compiler/testData/diagnostics/testsWithJsStdLib/native/anonymousInitializer.txt

@@ -0,0 +1,8 @@
+package
+
+public external 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
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/testsWithJsStdLib/native/enumEntry.kt

@@ -0,0 +1,7 @@
+external enum class E {
+    X,
+    Y <!EXTERNAL_ENUM_ENTRY_WITH_BODY!>{
+        fun foo()
+    }<!>,
+    Z <!EXTERNAL_ENUM_ENTRY_WITH_BODY!>{}<!>
+}

compiler/testData/diagnostics/testsWithJsStdLib/native/enumEntry.txt

@@ -0,0 +1,22 @@
+package
+
+public external final enum class E : kotlin.Enum<E> {
+    enum entry X
+
+    enum entry Y
+
+    enum entry Z
+
+    private constructor E()
+    public final override /*1*/ /*fake_override*/ val name: kotlin.String
+    public final override /*1*/ /*fake_override*/ val ordinal: kotlin.Int
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: E): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): E
+    public final /*synthesized*/ fun values(): kotlin.Array<E>
+}

compiler/testData/diagnostics/testsWithJsStdLib/native/propertyParameter.kt

@@ -0,0 +1 @@
+external class C(x: Int, <!EXTERNAL_CLASS_CONSTRUCTOR_PROPERTY_PARAMETER!>val y: String<!>)

compiler/testData/diagnostics/testsWithJsStdLib/native/propertyParameter.txt

@@ -0,0 +1,9 @@
+package
+
+public external final class C {
+    public constructor C(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.String)
+    public final val y: kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/testsWithJsStdLib/native/wrongTarget.kt

@@ -1,4 +1,4 @@
-external annotation class <!WRONG_EXTERNAL_DECLARATION!>A<!>
+external annotation class <!WRONG_EXTERNAL_DECLARATION!>A(val x: Int)<!>
 
 val x: Int
     <!WRONG_EXTERNAL_DECLARATION!>external get()<!> = noImpl
@@ -16,4 +16,6 @@ class C {
 external class D {
     val a: Int
         <!WRONG_EXTERNAL_DECLARATION!>external get()<!> = noImpl
-}
+}
+
+external data class <!WRONG_EXTERNAL_DECLARATION!>E(val x: Int)<!>

compiler/testData/diagnostics/testsWithJsStdLib/native/wrongTarget.txt

@@ -4,7 +4,8 @@ public val x: kotlin.Int
 public val B.x: kotlin.Int
 
 public external final annotation class A : kotlin.Annotation {
-    public constructor A()
+    public constructor A(/*0*/ x: kotlin.Int)
+    public final val x: kotlin.Int
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
@@ -32,3 +33,13 @@ public external final class D {
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
+
+public external final data class E {
+    public constructor E(/*0*/ x: kotlin.Int)
+    public final val x: kotlin.Int
+    public final operator /*synthesized*/ fun component1(): kotlin.Int
+    public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Int = ...): E
+    public open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
+}