check that target is an object before deleting property

Signed-off-by: andrew-coleman <andrew_coleman@uk.ibm.com>

Author: andrew-coleman

src/jsonata.js

@@ -1317,7 +1317,9 @@ var jsonata = (function() {
                                 };
                             }
                             for (var jj = 0; jj < deletions.length; jj++) {
-                                delete match[deletions[jj]];
+                                if(typeof match === 'object' && match !== null) {
+                                    delete match[deletions[jj]];
+                                }
                             }
                         }
                     }

test/test-suite/groups/transforms/case013.json

@@ -0,0 +1,12 @@
+{
+    "expr": "$ ~> | ** ['hi'] | {'hello': hi}, ['hi'] |",
+    "data": {
+        "hi": "world",
+        "bye": null
+    },
+    "bindings": {},
+    "result": {
+        "hello": "world",
+        "bye": null
+    }
+}

test/test-suite/groups/transforms/case014.json

@@ -0,0 +1,12 @@
+{
+    "expr": "$ ~> | ** [hi] | {'hello': hi}, ['hi'] |",
+    "data": {
+        "hi": "world",
+        "bye": null
+    },
+    "bindings": {},
+    "result": {
+        "bye": null,
+        "hello": "world"
+    }
+}