From 3a3870908fe318c83b2c0ef7fca1f2244d365932 Mon Sep 17 00:00:00 2001
From: David Grudl <david@grudl.com>
Date: Tue, 7 Jan 2020 17:50:36 +0100
Subject: [PATCH] class aliases are loaded on demand

---
 composer.json                              |  3 +--
 src/Application/UI/Component.php           |  3 +++
 src/Application/UI/ComponentReflection.php |  3 +++
 src/compatibility.php                      | 21 +++++++++++++++++++--
 4 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/composer.json b/composer.json
index baf7148f7..d691e32b7 100644
--- a/composer.json
+++ b/composer.json
@@ -42,8 +42,7 @@
 		"nette/latte": "<2.4"
 	},
 	"autoload": {
-		"classmap": ["src/"],
-		"files": ["src/compatibility.php"]
+		"classmap": ["src/"]
 	},
 	"minimum-stability": "dev",
 	"extra": {
diff --git a/src/Application/UI/Component.php b/src/Application/UI/Component.php
index 426a37013..137f1945e 100644
--- a/src/Application/UI/Component.php
+++ b/src/Application/UI/Component.php
@@ -410,3 +410,6 @@ public function offsetUnset($name)
 		}
 	}
 }
+
+
+class_exists(PresenterComponent::class);
diff --git a/src/Application/UI/ComponentReflection.php b/src/Application/UI/ComponentReflection.php
index 003a98f78..1f844e518 100644
--- a/src/Application/UI/ComponentReflection.php
+++ b/src/Application/UI/ComponentReflection.php
@@ -352,3 +352,6 @@ public function __call($name, $args)
 		Nette\Utils\ObjectMixin::strictCall(get_class($this), $name);
 	}
 }
+
+
+class_exists(PresenterComponentReflection::class);
diff --git a/src/compatibility.php b/src/compatibility.php
index 49f2ebc5d..02c80e0b0 100644
--- a/src/compatibility.php
+++ b/src/compatibility.php
@@ -5,5 +5,22 @@
  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
  */
 
-class_alias('Nette\Application\UI\Component', 'Nette\Application\UI\PresenterComponent');
-class_alias('Nette\Application\UI\ComponentReflection', 'Nette\Application\UI\PresenterComponentReflection');
+namespace Nette\Application\UI;
+
+if (false) {
+	/** @deprecated use Nette\Application\UI\Component */
+	class PresenterComponent
+	{
+	}
+} elseif (!class_exists(PresenterComponent::class)) {
+	class_alias(Component::class, PresenterComponent::class);
+}
+
+if (false) {
+	/** @deprecated use Nette\Application\UI\ComponentReflection */
+	class PresenterComponentReflection
+	{
+	}
+} elseif (!class_exists(PresenterComponentReflection::class)) {
+	class_alias(ComponentReflection::class, PresenterComponentReflection::class);
+}