Refactored utils.orderProperties.

Author: n1k0

src/utils.js

@@ -89,8 +89,8 @@ export function orderProperties(properties, order) {
     throw new Error(
       "uiSchema order list length should match object properties length");
   }
-  if ([].slice.call(order).sort().toString() !==
-      [].slice.call(properties).sort().toString()) {
+  const fingerprint = (arr) => [].slice.call(arr).sort().toString();
+  if (fingerprint(order) !== fingerprint(properties)) {
     throw new Error(
       "uiSchema order list does not match object properties list");
   }