Added a custom onPageExpired handler callback

src/view/frontend/layout/default_hyva.xml

@@ -46,8 +46,8 @@
                            ifconfig="dev/magewire/loader/enable"
                            template="Magewirephp_Magewire::page/js/magewire/plugin/loader.phtml"/>
 
-                    <block name="magewire.plugin.exception"
-                           template="Magewirephp_Magewire::page/js/magewire/plugin/exception.phtml"
+                    <block name="magewire.plugin.error"
+                           template="Magewirephp_Magewire::page/js/magewire/plugin/error.phtml"
                     >
                         <arguments>
                             <argument name="view_model" xsi:type="object">

src/view/frontend/templates/page/js/magewire/plugin/error.phtml

@@ -0,0 +1,50 @@
+<?php declare(strict_types=1);
+/**
+ * Copyright © Willem Poortman 2021-present. All rights reserved.
+ *
+ * Please read the README and LICENSE files for more
+ * details on copyrights and license information.
+ */
+
+/** @var Magewire $magewireScripts */
+/** @var Escaper $escaper */
+/** @var Template $block */
+
+use Magento\Framework\Escaper;
+use Magento\Framework\View\Element\Template;
+use Magewirephp\Magewire\ViewModel\Magewire;
+
+$magewireScripts = $block->getViewModel();
+$messages = $block->getData('status_messages');
+?>
+<script>
+    'use strict';
+
+    Magewire.onPageExpired(() => {
+        alert('<?= $escaper->escapeJs(__($messages[419] ?? 'Your session has expired due to inactivity.')) ?>')
+        window.location.reload()
+    })
+
+    Magewire.onError((status, response) => {
+        <?php /* We need to make sure Magewire reaches the native 419 handling. */ ?>
+        if (status === 419) {
+            return
+        }
+
+        <?php if ($magewireScripts->isProductionMode()): ?>
+        response.text().then((result) => {
+            let messages = <?= /** @noEscape */ json_encode(array_map('__', $messages)) ?>
+            result = JSON.parse(result)
+
+            console.error(
+                `Magewire: ${ messages[status] || result.message || 'Something went wrong' } (${ status })`
+            )
+        }).catch((exception) => {
+            console.error(exception)
+        })
+
+        return false
+        <?php endif ?>
+    })
+</script>
+