Add support for using strict types in configs (#4)

src/ArrayFile.php

@@ -305,6 +305,7 @@ protected function getAstReturnIndex(array $ast): ?int
             switch (get_class($item)) {
                 case Stmt\Use_::class:
                 case Stmt\Expression::class:
+                case Stmt\Declare_::class:
                     break;
                 case Stmt\Return_::class:
                     return $index;

tests/ArrayFileTest.php

@@ -845,4 +845,14 @@ public function testSingleLineCommentSubItem()
             str_replace("\r", '', $arrayFile->render())
         );
     }
+
+    public function testStrictFileTypes()
+    {
+        $file = __DIR__ . '/fixtures/array/strict-file-types.php';
+        $arrayFile = ArrayFile::open($file);
+
+        $code = $arrayFile->render();
+
+        $this->assertStringContainsString('declare', $code);
+    }
 }

tests/fixtures/array/strict-file-types.php

@@ -0,0 +1,7 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'foo' => Response::HTTP_OK
+];