Few tiny fixes (#6277)

src/Config/RectorConfig.php

@@ -31,7 +31,7 @@
 final class RectorConfig extends Container
 {
     /**
-     * @var array<class-string<RectorInterface>, mixed[]>>
+     * @var array<class-string<ConfigurableRectorInterface>, mixed[]>>
      */
     private array $ruleConfigurations = [];
 
@@ -418,4 +418,22 @@ public function reportingRealPath(bool $absolute = true): void
     {
         SimpleParameterProvider::setParameter(Option::ABSOLUTE_FILE_PATH, $absolute);
     }
+
+    /**
+     * @internal Used only for bridge
+     * @return array<class-string<ConfigurableRectorInterface>, mixed>
+     */
+    public function getRuleConfigurations(): array
+    {
+        return $this->ruleConfigurations;
+    }
+
+    /**
+     * @internal Used only for bridge
+     * @return array<class-string<RectorInterface>>
+     */
+    public function getRectorClasses(): array
+    {
+        return $this->tags[RectorInterface::class] ?? [];
+    }
 }

src/Configuration/Levels/LevelRulesResolver.php

@@ -16,18 +16,20 @@ final class LevelRulesResolver
      */
     public static function resolve(int $level, array $availableRules, string $methodName): array
     {
+        // level < 0 is not allowed
+        Assert::natural($level, sprintf('Level must be >= 0 on %s', $methodName));
+
+        Assert::allIsAOf($availableRules, RectorInterface::class);
+
         $rulesCount = count($availableRules);
 
         if ($availableRules === []) {
             throw new ShouldNotHappenException(sprintf(
-                'There is no available rules in %s, define the available rules first',
+                'There are no available rules in "%s()", define the available rules first',
                 $methodName
             ));
         }
 
-        // level < 0 is not allowed
-        Assert::natural($level, sprintf('Level must be >= 0 on %s', $methodName));
-
         // start with 0
         $maxLevel = $rulesCount - 1;
         if ($level > $maxLevel) {