From d04a68f190fb696e67cab603d26a63b8ceb042a0 Mon Sep 17 00:00:00 2001
From: Will Soto <willsoto@users.noreply.github.com>
Date: Fri, 7 Jun 2019 08:46:03 -0400
Subject: [PATCH] fix(core): guard against missing options

Signed-off-by: Will Soto <willsoto@users.noreply.github.com>
---
 lib/core.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/core.ts b/lib/core.ts
index 8a682998..16587752 100644
--- a/lib/core.ts
+++ b/lib/core.ts
@@ -117,6 +117,10 @@ export class ObjectionCoreModule {
       };
     }
 
+    if (!options.useClass || !options.useExisting) {
+      throw new Error("Invalid configuration");
+    }
+
     return {
       provide: OBJECTION_MODULE_OPTIONS,
       async useFactory(