Weeks
dayjs.duration().weeks();
dayjs.duration().asWeeks();
As with the other getters for durations, dayjs.duration().weeks() gets the weeks (0 - 4).
dayjs.duration().asWeeks() gets the length of the duration in weeks.
Pay attention that unlike the other getters for duration, weeks are counted as a subset of the days, and are not taken off the days count.
Note: The length of a duration in weeks is defined as 7 days.