Revert "Remove usage of internal Nashorn methods (fixes #74)"

This reverts commit 27b3b3a
purplejs · Sep 25, 2017 · 7d38e8b · 7d38e8b
1 parent 27b3b3a
commit 7d38e8b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/modules/purplejs-core/src/main/java/io/purplejs/core/internal/nashorn/NashornHelper.java b/modules/purplejs-core/src/main/java/io/purplejs/core/internal/nashorn/NashornHelper.java
@@ -3,12 +3,13 @@
 import java.util.Date;
 
 import jdk.nashorn.api.scripting.ScriptObjectMirror;
+import jdk.nashorn.internal.runtime.ScriptRuntime;
 
 public final class NashornHelper
 {
     public static boolean isUndefined( final Object value )
     {
-        return ( value == null ) || ( value.getClass().getSimpleName().equalsIgnoreCase( "undefined" ) );
+        return ( value == null ) || ( value == ScriptRuntime.UNDEFINED );
     }
 
     public static boolean isDateType( final Object value )