{
    "type": "object",
    "properties": {
        "post_list_date_format": {
            "description": "Used on archive pages to control the appearance of dates. Deprecated; will likely be removed by https://github.com/alexwlchan/alexwlchan.net/issues/512."
            "type": "string",
            "enum": ["day_month", "month_year"]
        }
    },
    "additionalProperties": false
}

Check in the initial front matter
Check in the initial front matter
