From 01f4884f14705bac1d70bb514662b32484f2330e Mon Sep 17 00:00:00 2001
From: Loris Leiva <loris.leiva@gmail.com>
Date: Tue, 25 Jan 2022 18:27:34 +0000
Subject: [PATCH] Make stronger assertion before caching commands

---
 src/Illuminate/Console/Application.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Illuminate/Console/Application.php b/src/Illuminate/Console/Application.php
index 3c1b87f9f30c..3c7f5c9bf9b2 100755
--- a/src/Illuminate/Console/Application.php
+++ b/src/Illuminate/Console/Application.php
@@ -267,7 +267,7 @@ protected function addToParent(SymfonyCommand $command)
      */
     public function resolve($command)
     {
-        if (class_exists($command) && ($commandName = $command::getDefaultName())) {
+        if (is_subclass_of($command, SymfonyCommand::class) && ($commandName = $command::getDefaultName())) {
             $this->commandMap[$commandName] = $command;
 
             return null;