JS: make defensive copy of argument list in JsInvocation and JsNew constructor

js/js.translator/src/org/jetbrains/kotlin/js/translate/callTranslator/FunctionCallCases.kt

@@ -200,21 +200,25 @@ object ConstructorCallCase : FunctionCallCase() {
         val invocationArguments = mutableListOf<JsExpression>()
 
         val constructorDescriptor = callableDescriptor as ClassConstructorDescriptor
-        if (context.shouldBeDeferred(constructorDescriptor)) {
-            context.deferConstructorCall(constructorDescriptor, invocationArguments)
-        }
-        else {
+
+        if (!context.shouldBeDeferred(constructorDescriptor)) {
             val closure = context.getClassOrConstructorClosure(constructorDescriptor)
             invocationArguments += closure?.map { context.getArgumentForClosureConstructor(it) }.orEmpty()
         }
 
         invocationArguments += argumentsInfo.getArguments()
-        return if (constructorDescriptor.isPrimary || AnnotationsUtils.isNativeObject(constructorDescriptor)) {
+        val result = if (constructorDescriptor.isPrimary || AnnotationsUtils.isNativeObject(constructorDescriptor)) {
             JsNew(functionRef, invocationArguments)
         }
         else {
             JsInvocation(functionRef, invocationArguments)
         }
+
+        if (context.shouldBeDeferred(constructorDescriptor)) {
+            context.deferConstructorCall(constructorDescriptor, result.arguments)
+        }
+
+        return result
     }
 }
 

js/js.translator/src/org/jetbrains/kotlin/js/translate/declaration/JsDataClassGenerator.java

@@ -95,9 +95,9 @@ class JsDataClassGenerator extends DataClassMethodGenerator {
 
         JsExpression constructorRef = context.getInnerReference(constructor);
 
-        JsExpression returnExpression = new JsNew(constructorRef, constructorArguments);
+        JsNew returnExpression = new JsNew(constructorRef, constructorArguments);
         if (context.shouldBeDeferred(constructor)) {
-            context.deferConstructorCall(constructor, constructorArguments);
+            context.deferConstructorCall(constructor, returnExpression.getArguments());
         }
         functionObj.getBody().getStatements().add(new JsReturn(returnExpression));
     }