\Drupal\Core\Field\Plugin\Field\FieldType\NumericItemBase

core/lib/Drupal/Core/Field/Plugin/Field/FieldType/NumericItemBase.php

@@ -64,10 +64,9 @@ public function fieldSettingsForm(array $form, FormStateInterface $form_state) {
    * {@inheritdoc}
    */
   public function isEmpty() {
-    if (empty($this->value) && (string) $this->value !== '0') {
-      return TRUE;
-    }
-    return FALSE;
+    $value = $this->get('value')->getValue();
+
+    return empty($value) && (string) $value !== '0';
   }
 
   /**

core/phpstan-baseline.neon

@@ -738,11 +738,6 @@ parameters:
 			count: 1
 			path: lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
 
-		-
-			message: "#^Access to an undefined property Drupal\\\\Core\\\\Field\\\\Plugin\\\\Field\\\\FieldType\\\\NumericItemBase\\:\\:\\$value\\.$#"
-			count: 1
-			path: lib/Drupal/Core/Field/Plugin/Field/FieldType/NumericItemBase.php
-
 		-
 			message: "#^Access to an undefined property Drupal\\\\Core\\\\FileTransfer\\\\FileTransfer\\:\\:\\$chroot\\.$#"
 			count: 3