11ty-light-blog/src/_includes/partials/posts-light.njk

{% if postslist %}
<ul role="list">
    {% asyncEach post in postslist %}
        <li>{% set definedDate = post.date %}
            <a href="{{ post.url | url }}">{{ post.data.title }} ({% include "partials/date.njk" %})</a>
        </li>
    {% endeach %}
</ul>
{% endif %}