after

The date is later than the date in a sibling field.

Signature

function after(field: string, msg?: Message): Action<Date>

Parameters

Parameter	Type	Description
field	string	Name of the sibling field
msg	Message	Custom error message

Error codes

Code	When	Default message
after	The date is not later than the sibling	Must be after {field}

You can change the texts: see Messages & i18n.

Notes

Compared with the raw value of the sibling field — a date or a string. If the sibling is empty or not a date, the rule passes: that field's schema reports the error.

Example

const Period = object({
  start: coerce.date(),
  end: pipe(coerce.date(), after('start')),
});

validate(Period, { start: '2026-05-10', end: '2026-05-01' }).errors; // { end: 'Must be after start' }

See also

• before
• minDate