rule to declare strict types

Author: lizhineng

rector.php

@@ -6,6 +6,7 @@
 use Rector\Php80\Rector\FunctionLike\MixedTypeRector;
 use Rector\Set\ValueObject\LevelSetList;
 use Rector\Set\ValueObject\SetList;
+use Rector\TypeDeclaration\Rector\StmtsAwareInterface\DeclareStrictTypesRector;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->paths([
@@ -21,6 +22,10 @@
         SetList::STRICT_BOOLEANS,
     ]);
 
+    $rectorConfig->rules([
+        DeclareStrictTypesRector::class,
+    ]);
+
     $rectorConfig->skip([
         MixedTypeRector::class,
     ]);