Modified cloneNode to ignore own properties of clone.

rbuckton · rbuckton · commit 0ee4e0b10dd9 · 2015-11-20T10:13:01.000-08:00
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
@@ -1597,7 +1597,7 @@ namespace ts {
             : <T>createSynthesizedNode(node.kind);
 
         for (const key in node) {
-            if (isExcludedPropertyForClone(key) || !node.hasOwnProperty(key)) {
+            if (clone.hasOwnProperty(key) || !node.hasOwnProperty(key)) {
                 continue;
             }
 
@@ -1615,13 +1615,6 @@ namespace ts {
         return clone;
     }
 
-    function isExcludedPropertyForClone(property: string) {
-        return property === "pos"
-            || property === "end"
-            || property === "flags"
-            || property === "parent";
-    }
-
     /**
      * Creates a deep clone of an EntityName, with new parent pointers.
      * @param node The EntityName to clone.
