Add enum.isValid

1 files changed, 7 insertions, 2 deletions

diff --git a/app/lib/enum.js b/app/lib/enum.js
index 4359c3bfb3..c2042c07fa 100644
--- a/app/lib/enum.js
+++ b/app/lib/enum.js
@@ -2,15 +2,20 @@
  * Creates enum object with keys provided as arguments
  */
 export default function Enum() {
-  let object = {};
+  let object = Object.create({});
+  const keys = [...arguments];
 
-  for(const key of arguments) {
+  for(const key of keys) {
     Object.defineProperty(object, key, {
       enumerable: true,
       value: key,
       writable: false
     });
   }
+  
+  Object.defineProperty(object, 'isValid', {
+    value: (e) => keys.includes(e)
+  });
 
   Object.freeze(object);