Rector\TypeDeclaration\Rector\ClassMethod\StringReturnTypeFromStrictScalarReturnsRector

StringReturnTypeFromStrictScalarReturnsRector

Add string return type based on returned string scalar values

 final class SomeClass
 {
-    public function foo($condition)
+    public function foo($condition): string
     {
         if ($condition) {
             return 'yes';
         }

         return 'no';
     }
 }

Configure your rector.php:

<?php

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

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

SETS: Type Declarations