From 193f4bfb44cab95d0315521a687273b54a632a45 Mon Sep 17 00:00:00 2001
From: Roman Hotsiy <gotsijroman@gmail.com>
Date: Thu, 9 Mar 2017 19:58:13 +0200
Subject: [PATCH] fix: wrong warnings for $ref not single

closes #221
---
 lib/services/schema-normalizer.service.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/services/schema-normalizer.service.ts b/lib/services/schema-normalizer.service.ts
index 433d03a8..4a3881e2 100644
--- a/lib/services/schema-normalizer.service.ts
+++ b/lib/services/schema-normalizer.service.ts
@@ -99,6 +99,7 @@ class SchemaWalker {
 export class AllOfMerger {
   static merge(into, schemas) {
     into['x-derived-from'] = [];
+    let hadDiscriminator = !!into.discriminator;
     for (let i=0; i < schemas.length; i++) {
       let subSchema = schemas[i];
       into['x-derived-from'].push(subSchema._pointer);
@@ -115,7 +116,7 @@ export class AllOfMerger {
       defaults(into, subSchema);
       subSchema._pointer = tmpPtr;
     }
-    into.discriminator = null;
+    if (!hadDiscriminator) into.discriminator = null;
     into.allOf = null;
   }
 
@@ -214,7 +215,8 @@ class SchemaDereferencer {
     // if resolved schema doesn't have title use name from ref
     resolved.title = resolved.title || JsonPointer.baseName($ref);
 
-    let keysCount = Object.keys(schema).length;
+    let keysCount = Object.keys(schema).filter(key => !key.startsWith('x-redoc')).length;
+
     if ( keysCount > 2 || (keysCount === 2 && !schema.description) ) {
       WarningsService.warn(`Other properties are defined at the same level as $ref at "#${pointer}". ` +
         'They are IGNORED according to the JsonSchema spec');