From b1d928dbd388d0b1ac8700a02d02fe7ff43fec09 Mon Sep 17 00:00:00 2001
From: Roman Hotsiy <gotsijroman@gmail.com>
Date: Fri, 23 Feb 2018 15:02:04 +0200
Subject: [PATCH] fix: fix crash when discriminator is used incorrectly

---
 lib/utils/spec-manager.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/utils/spec-manager.ts b/lib/utils/spec-manager.ts
index e18d679e19..08f31b6843 100644
--- a/lib/utils/spec-manager.ts
+++ b/lib/utils/spec-manager.ts
@@ -198,6 +198,7 @@ export class SpecManager {
     let definition = schema || this.byPointer(defPointer);
     if (!definition) throw new Error(`Can't load schema at ${defPointer}`);
     if (!definition.discriminator && !definition['x-extendedDiscriminator']) return [];
+    if (defPointer === undefined) return [];
 
     let globalDefs = this._schema.definitions || {};
     let res:DescendantInfo[] = [];