From ed92fd37eab5a0f834255eb4f363b5d603cbc15e Mon Sep 17 00:00:00 2001
From: "Micael Levi L. Cavalcante" <mllc@icomp.ufam.edu.br>
Date: Fri, 6 Oct 2023 11:37:18 -0400
Subject: [PATCH] fix(core): when the discoverable decorator is not used

---
 packages/core/discovery/discoverable-meta-host-collection.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/core/discovery/discoverable-meta-host-collection.ts b/packages/core/discovery/discoverable-meta-host-collection.ts
index c0642b278da..fd5c79dfaae 100644
--- a/packages/core/discovery/discoverable-meta-host-collection.ts
+++ b/packages/core/discovery/discoverable-meta-host-collection.ts
@@ -94,7 +94,7 @@ export class DiscoverableMetaHostCollection {
     metaKey: string,
   ): Set<InstanceWrapper> {
     const wrappersByMetaKey = this.providersByMetaKey.get(hostContainerRef);
-    return wrappersByMetaKey.get(metaKey);
+    return wrappersByMetaKey?.get(metaKey) ?? new Set<InstanceWrapper>();
   }
 
   public static getControllersByMetaKey(
@@ -102,7 +102,7 @@ export class DiscoverableMetaHostCollection {
     metaKey: string,
   ): Set<InstanceWrapper> {
     const wrappersByMetaKey = this.controllersByMetaKey.get(hostContainerRef);
-    return wrappersByMetaKey.get(metaKey);
+    return wrappersByMetaKey?.get(metaKey) ?? new Set<InstanceWrapper>();
   }
 
   private static inspectInstanceWrapper(