最小星期缩写

Locale#weekdaysMin 应该是两个字母星期缩写的数组。

¥Locale#weekdaysMin should be an array of two letter weekday abbreviations.

This requires the UpdateLocale plugin to work

dayjs.extend(updateLocale)

dayjs.updateLocale('en', {
  weekdaysMin: ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"]
})