$gtm
$gtm is a shallowRef object that is equal to Google Tag Manager (GTM) fbq object. You can work with it in the same way as with the original fbq.
Example
vue
<script setup>
const { $gtm } = useNuxtApp();
onMounted(() => {
$gtm.value({
event: 'pageview',
page_path: window.location.pathname,
page_title: document.title
});
</script>