diff --git a/js/node/node_modules/jshint/src/jshint.js b/js/node/node_modules/jshint/src/jshint.js
index d75cedfcc0..f96b48a92a 100644
--- a/js/node/node_modules/jshint/src/jshint.js
+++ b/js/node/node_modules/jshint/src/jshint.js
@@ -1881,6 +1881,9 @@ var JSHINT = (function() {
     if (membersOnly && typeof membersOnly[m] !== "boolean") {
       warning("W036", state.tokens.curr, m);
     }
+    if (m === "_shallowCopy" || m === "propertyKeys") {
+      return;
+    }
     if (typeof member[m] === "number") {
       member[m] += 1;
     } else {