Merge pull request #33 from mmenozzi/patch-1

Fix BuilderEvent to work with both Symfony 4 and 5

src/Event/BuilderEvent.php

@@ -6,8 +6,21 @@
 
 use Setono\SyliusFacebookPlugin\Builder\BuilderInterface;
 use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 
-final class BuilderEvent extends Event
+if (is_subclass_of(EventDispatcherInterface::class, ContractsEventDispatcherInterface::class)) {
+    abstract class BCEvent extends ContractsEvent
+    {
+    }
+} else {
+    abstract class BCEvent extends Event
+    {
+    }
+}
+
+final class BuilderEvent extends BCEvent
 {
     private BuilderInterface $builder;