From 0781a56415dd2ed44af602cbef2625bccf38cbd7 Mon Sep 17 00:00:00 2001
From: Fudong Fan <fudong@umich.edu>
Date: Tue, 10 Jul 2018 09:56:35 -0400
Subject: [PATCH] Added schema property !enum

Just the inverse of the existing property "enum"
---
 lib/revalidator.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/revalidator.js b/lib/revalidator.js
index 58476b0..f17bdf3 100644
--- a/lib/revalidator.js
+++ b/lib/revalidator.js
@@ -114,6 +114,7 @@
       additionalProperties: "must not exist"
   };
   validate.messages['enum'] = "must be present in given enumerator";
+  validate.messages['notEnum'] = "must not be present in given enumerator";
 
   /**
    *
@@ -295,6 +296,10 @@
     if (schema['enum'] && schema['enum'].indexOf(value) === -1) {
       error('enum', property, value, schema, errors);
     }
+    
+    if (schema['notEnum'] && schema['notEnum'].indexOf(value) > -1 ) {
+      error('notEnum', property, value, schema, errors);
+    }
 
     // Dependencies (see 5.8)
     if (typeof schema.dependencies === 'string' &&