Add PrependTypeFilter method

src/DeepCopy/DeepCopy.php

@@ -122,6 +122,14 @@ public function addTypeFilter(TypeFilter $filter, TypeMatcher $matcher)
         ];
     }
 
+    public function prependTypeFilter(TypeFilter $filter, TypeMatcher $matcher)
+    {
+        array_unshift($this->typeFilters, [
+            'matcher' => $matcher,
+            'filter'  => $filter,
+        ]);
+    }
+
     private function recursiveCopy($var)
     {
         // Matches Type Filter

tests/DeepCopyTest/DeepCopyTest.php

@@ -30,6 +30,7 @@
 use DeepCopy\Matcher\Doctrine\DoctrineProxyMatcher;
 use DeepCopy\Matcher\PropertyNameMatcher;
 use DeepCopy\Matcher\PropertyTypeMatcher;
+use DeepCopy\TypeFilter\ReplaceFilter;
 use DeepCopy\TypeFilter\ShallowCopyFilter;
 use DeepCopy\TypeMatcher\TypeMatcher;
 use PHPUnit\Framework\TestCase;
@@ -475,6 +476,21 @@ public function test_it_can_prepend_filter()
         $this->assertNull($copy->getFoo());
     }
 
+    public function test_it_can_prepend_type_filter()
+    {
+        $object = new f008\A('bar');
+        $deepCopy = new DeepCopy();
+        $deepCopy->addTypeFilter(new ReplaceFilter(function ($object) {
+            return new f008\A('baz');
+        }), new TypeMatcher(f008\A::class));
+        $deepCopy->prependTypeFilter(new ReplaceFilter(function ($object) {
+            return new f008\A('foo');
+        }), new TypeMatcher(f008\A::class));
+
+        $copy = $deepCopy->copy($object);
+        $this->assertEquals('foo',$copy->getFoo());
+    }
+
     /**
      * @ticket https://github.com/myclabs/DeepCopy/issues/143
      * @requires PHP 7.4