valid-moment/src/format.ts

Convert standard date string to Date, based on moment.js; and invalidate bad formatting

export const ISO8601_FORMATS = [
  "yyyy-MM-dd",
  "yyyyMMdd",
  "yyyy-DDDD",
  "yyyyDDDD"
];

export const DATE_FORMATS = [
  ...ISO8601_FORMATS,
  "DDDD",
  "DDD",
  "DD",
  "D"
];