NumericReturnTypeFromStrictScalarReturnsRector

Add int/float return type based on strict scalar returns type

 class SomeClass
 {
-    public function getNumber()
+    public function getNumber(): int
     {
         return 200;
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\NumericReturnTypeFromStrictScalarReturnsRector;

return RectorConfig::configure()
    ->withRules([
        NumericReturnTypeFromStrictScalarReturnsRector::class,
    ]);