The csrf_token function retrieves the value of the current CSRF token:
<?php $token = csrf_token();
<?php         $versionHash = $manifest['/livewire.js'];

        $url = "{$url}?id={$versionHash}";



        $token = app()->has('session.store') ? csrf_token() : '';



        $assetWarning = null;
<?php         $progressBar = config('livewire.navigate.show_progress_bar', true) ? '' : 'data-no-progress-bar';



        $attributes = json_encode([

            'csrf' => app()->has('session.store') ? csrf_token() : '',

            'uri' => app('livewire')->getUpdateUri(),

            'progressBar' => $progressBar,

            'nonce' => isset($options['nonce']) ? $options['nonce'] : '',