JS: report errors on different external items:

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

js/js.translator/testData/box/native/classObject.kt

@@ -1,6 +1,8 @@
 package foo
 
-external class A(val c: Int) {
+external class A(c: Int) {
+    val c: Int
+
     companion object {
         val g: Int
         val c: String = noImpl

js/js.translator/testData/box/native/inheritanceFromNativeClass.kt

@@ -1,6 +1,8 @@
 package foo
 
-internal external open class A(val a: Int) {
+internal external open class A(a: Int) {
+    val a: Int
+
     fun g(): Int = noImpl
     fun m(): Int = noImpl
 

js/js.translator/testData/box/native/nestedElements.kt

@@ -87,7 +87,8 @@ external object Object {
         fun test(): Int = noImpl
 
         @JsName("AnotherClass")
-        class Class(val a: String) {
+        class Class(a: String) {
+            val a: String
             var b: String = noImpl
             fun test(): Int = noImpl
 
@@ -99,7 +100,8 @@ external object Object {
         }
     }
 
-    class Class(val a: String) {
+    class Class(a: String) {
+        val a: String
         var b: String = noImpl
         fun test(): Int = noImpl
 
@@ -135,7 +137,8 @@ external class Class {
         fun test(): Int = noImpl
     }
 
-    class Class(val a: String) {
+    class Class(a: String) {
+        val a: String
         var b: String = noImpl
         fun test(): Int = noImpl
 
@@ -174,7 +177,8 @@ external interface Trait {
         fun test(): Int = noImpl
     }
 
-    class Class(val a: String) {
+    class Class(a: String) {
+        val a: String
         var b: String = noImpl
         fun test(): Int = noImpl
 

js/js.translator/testData/box/native/passExtLambdaFromNative.kt

@@ -1,6 +1,8 @@
 package foo
 
-internal external class A(val v: String)
+internal external class A(v: String) {
+    val v: String
+}
 
 internal class B {
     fun bar(a: A, extLambda: A.(Int, String) -> String): String = a.extLambda(7, "_rr_")

js/js.translator/testData/box/native/passExtLambdaToNative.kt

@@ -1,6 +1,8 @@
 package foo
 
-external class A(val v: String)
+external class A(v: String) {
+    val v: String
+}
 
 external fun bar(a: A, extLambda: A.(Int, String) -> String): String = noImpl
 

js/js.translator/testData/box/native/passMemberOrExtFromNative.kt

@@ -1,6 +1,8 @@
 package foo
 
-external class A(val v: String) {
+external class A(v: String) {
+    val v: String
+
     fun m(i:Int, s:String): String = noImpl
 }
 

js/js.translator/testData/box/native/vararg.kt

@@ -16,7 +16,8 @@ fun anotherCount(vararg a: Int) = anotherParamCount(*a)
 
 external fun test3(bar: Bar, dummy: Int, vararg args: Int): Boolean = noImpl
 
-external class Bar(val size: Int, order: Int = noImpl) {
+external class Bar(size: Int, order: Int = noImpl) {
+    val size: Int
     fun test(order: Int, dummy: Int, vararg args: Int): Boolean = noImpl
     companion object {
         fun startNewTest(): Boolean = noImpl