From fab4f5d80e8b701b6a4f3a86e7976a9588c897cd Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Mon, 21 Oct 2019 16:21:40 -0400
Subject: [PATCH] test(schema): fix tests on node v4 and v5

---
 test/schema.test.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/schema.test.js b/test/schema.test.js
index 7b4d6435c87..23ecf032ba4 100644
--- a/test/schema.test.js
+++ b/test/schema.test.js
@@ -2141,7 +2141,7 @@ describe('schema', function() {
     const keys = Object.keys(SchemaStringOptions.prototype).
       filter(key => key !== 'constructor');
     const functions = Object.keys(Schema.Types.String.prototype).
-      filter(key => !['constructor', 'cast', 'castForQuery', 'checkRequired'].includes(key));
+      filter(key => ['constructor', 'cast', 'castForQuery', 'checkRequired'].indexOf(key) === -1);
     assert.deepEqual(keys.sort(), functions.sort());
   });
 });