Filters date
Format a date value as an ISO 8601 date string (YYYY-MM-DD). Accepts any value accepted by the Date constructor and returns the date portion of the resulting ISO string.
How it works
/anyblades/eleventy-blades/refs/heads/main/filters/date.js :
export default function (dateVal) {
return new Date(dateVal).toISOString().split("T")[0];
}