fix mixed return type

Author: macintoshplus

src/Entity/Content.php

@@ -519,7 +519,7 @@ public function getTaxonomyValues(): array
         return $taxonomyValues;
     }
 
-    public function getFieldValue(string $fieldName): array|mixed|null
+    public function getFieldValue(string $fieldName): mixed
     {
         if ($this->hasField($fieldName) === false) {
             return null;

src/Entity/Field.php

@@ -243,7 +243,7 @@ public function isNew(): bool
     /**
      * like getValue() but returns single value for single value fields
      */
-    public function getParsedValue(): array|mixed|null
+    public function getParsedValue(): mixed
     {
         $value = $this->getValue();
         if (is_iterable($value)) {

src/Entity/Field/CheckboxField.php

@@ -7,6 +7,7 @@
 use Bolt\Entity\Field;
 use Bolt\Entity\FieldInterface;
 use Doctrine\ORM\Mapping as ORM;
+use Twig\Markup;
 
 /**
  * @ORM\Entity
@@ -37,7 +38,7 @@ public function setValue($value): Field
         return parent::setValue($value);
     }
 
-    public function getTwigValue()
+    public function getTwigValue(): string|array|Markup|bool
     {
         return current($this->getValue()) ? true : false;
     }

src/Entity/Field/SelectField.php

@@ -56,7 +56,7 @@ public function getValue(): ?array
         return array_filter((array) $value);
     }
 
-    public function getParsedValue()
+    public function getParsedValue(): mixed
     {
         $parsedValue = parent::getParsedValue();
 

src/Event/Subscriber/AuthSubscriber.php

@@ -52,7 +52,7 @@ public function onAuthenticationSuccess(AuthenticationSuccessEvent $event): void
 
     public function onLogout(LogoutEvent $event): void
     {
-        if (null === $event->getToken()) {
+        if ($event->getToken() === null) {
             return;
         }