From 298ee988ea4d50057b81fda09f97d4052ed2574d Mon Sep 17 00:00:00 2001
From: Toby Twigger <tobytwigger1@gmail.com>
Date: Sun, 27 Jun 2021 23:06:55 +0100
Subject: [PATCH] Throw an exception if the event has no listeners

---
 src/Command/Command.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Command/Command.php b/src/Command/Command.php
index 3cbbf83..9bd51a2 100644
--- a/src/Command/Command.php
+++ b/src/Command/Command.php
@@ -2,6 +2,7 @@
 
 namespace OriginEngine\Command;
 
+use Illuminate\Support\Facades\Event;
 use OriginEngine\Contracts\Feature\FeatureRepository;
 use OriginEngine\Contracts\Feature\FeatureResolver;
 use OriginEngine\Contracts\Pipeline\PipelineRunner;
@@ -84,6 +85,10 @@ public function getSubscribedSignals(): array
     public function handleSignal(int $signal): void
     {
         event(new SignalReceived($signal));
+
+        if(!Event::hasListeners(SignalReceived::class)) {
+            throw new \Exception(sprintf('Signal %u encountered, stopping.', $signal));
+        }
     }
 
 }