drupal-empty.twig

{# Check if a field has a value before printing it #}
{% if node.field_name.isEmpty == false %}
  <p>{{ content.field_name }} </p>
{% endif %}

{# Check if block is empty #}
{% if block('block_name')|trim is not empty %}
  <div>{% block block_name %}{% endblock %}</div>
{% endif %}

{# Check if a region has any output before #}
{% set region_name %}{% apply spaceless %}
  {{ content.region_name }}
{% endapply %}{% endset %}
{% if region_name or is_layout_builder %}
  <div {{ region_attributes.region_name }}>{{ region_name }}</div>
{% endif %}