rename JetClass.isTrait() to isInterface(); rename ClassKind.TRAIT to INTERACE

js/js.translator/src/org/jetbrains/kotlin/js/translate/context/Namer.java

@@ -385,7 +385,7 @@ public final class Namer {
     @NotNull
     public JsExpression classCreateInvocation(@NotNull ClassDescriptor descriptor) {
         switch (descriptor.getKind()) {
-            case TRAIT:
+            case INTERFACE:
                 return traitCreationMethodReference();
             case ENUM_CLASS:
                 return enumClassCreationMethodReference();

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

@@ -99,7 +99,7 @@ public final class ClassTranslator extends AbstractTranslator {
     }
 
     private boolean isTrait() {
-        return descriptor.getKind().equals(ClassKind.TRAIT);
+        return descriptor.getKind().equals(ClassKind.INTERFACE);
     }
 
     @NotNull

js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/JsDescriptorUtils.java

@@ -89,7 +89,7 @@ public final class JsDescriptorUtils {
                 ClassDescriptor classDescriptor = getClassDescriptorForType(type);
 
                 return !FAKE_CLASSES.contains(getFqNameSafe(classDescriptor).asString()) &&
-                       !(classDescriptor.getKind() == ClassKind.TRAIT && isNativeObject(classDescriptor));
+                       !(classDescriptor.getKind() == ClassKind.INTERFACE && isNativeObject(classDescriptor));
             }
         });
     }