function enqueue_firebase_scripts() { if (is_page_template('page-firebase-auth.php')) { // Replace with the actual URLs to Firebase SDK and your custom JS wp_enqueue_script('firebase-app', 'https://www.gstatic.com/firebasejs/8.0.0/firebase-app.js', array(), null, true); wp_enqueue_script('firebase-auth', 'https://www.gstatic.com/firebasejs/8.0.0/firebase-auth.js', array('firebase-app'), null, true); wp_enqueue_script('my-firebase-auth', get_template_directory_uri() . '/js/my-firebase-auth.js', array('firebase-auth'), null, true); } } add_action('wp_enqueue_scripts', 'enqueue_firebase_scripts');