isoWeek

Creates an ISO week validation action.

Format: yyyy-Www

The regex used cannot validate the maximum number of weeks based on the year. For example, "2021W53" is valid although 2021 has only 52 weeks.

const Action = v.isoWeek<TInput, TMessage>(message);

Generics

With isoWeek you can validate the formatting of a string. If the input is not an ISO week, you can use message to customize the error message.

The following examples show how isoWeek can be used.

Schema to validate an ISO week.

const IsoWeekSchema = v.pipe(
  v.string(),
  v.isoWeek('The week is badly formatted.')
);

The following APIs can be combined with isoWeek.