{% macro html(byline) %}
{% set comma = joiner() %}
<p class="byline">
  By {%- for author in byline -%}
  {% if not loop.last %}{{ comma() }}{% elif not loop.first %} and{% endif %} <span class="author" itemscope itemtype="http://schema.org/Person"><a itemprop="url" href="{{ author.url }}">{{ author.name }}</a></span>
  {%- endfor -%}
</p>
{% endmacro %}

{% macro ldjson(byline) %}
{% for author in byline %}{
  {% if author.name %}"name": "{{ author.name }}",{% endif %}
  {% if author.url %}"url": "{{ author.url }}",{% endif %}
  "@type": "Person"
}{% if not loop.last %},{% endif %}{% endfor %}
{% endmacro %}