Marketing Cloud: Empty Cart Code for Shopify

<script>
  _etmc.push(["setOrgId", "MID"]);
  _etmc.push(["trackCart", { "cart": [
    {%- for item in cart.items -%}
    {"item" : "{{ item.product.handle }}", "quantity":  "{{ item.quantity }}", "price" : "{{ item.product.price | money_without_currency }}", "unique_id" : "{{ item.sku }}" }, 
    {% endfor %}]
}]);
</script>
{% if cart.item_count == 0 %}
<script>
  _etmc.push(["setOrgId", "MID"]);
  _etmc.push(["trackCart", { "clear_cart": true } ]);
</script>
{% endif %}