Looping over values with Nunjucks. Some values are strings, some values are arrays. Now what?

context.json

{
  "items": [
    {
      "name": "Last modified time",
      "value": "2004-12-23T23:33Z"
    },
    {
      "name": "Recommended update interval",
      "value": "60s"
    },
    {
      "name": [
        "Authors",
        "Editors"
      ],
      "value": [
        "Robert Rothman",
        "Daniel Jackson"
      ]
    }
  ]
}

dl.html

<!-- Expected output -->
<dl>
    <dt>Last modified time</dt>
    <dd>2004-12-23T23:33Z</dd>
    <dt>Recommended update interval</dt>
    <dd>60s</dd>
    <dt>Authors</dt>
    <dt>Editors</dt>
    <dd>Robert Rothman</dd>
    <dd>Daniel Jackson</dd>
</dl>

dl.nunjucks

<dl>
{% for item in items %}
    {# if item.name is an array #}
        {% for name in item.name %}
            <dt>{{ name }}</dt>
        {% endfor %}
    {# else #}
        <dt>{{ item.name }}</dt>
    {# endif #}

    {# if item.value is an array #}
        {% for value in item.value %}
            <dd>{{ value }}</dd>
        {% endfor %}
    {# else #}
        <dd>{{ item.value }}</dd>
    {# endif #}
{% endfor %}
</dl>