how-old gives how old from birthdate to any date. Not just previous dates from birthdate.
new Date(2019, 1, 2), new Date(2020, 1, 1);{ years: 0, months: 11, days: 30 }new Date(2019, 1, 2), new Date(2020, 1, 1);{ years: 0, months: 11, days: 30 }new Date(2019, 1, 2), new Date(2020, 1, 1);{ years: 0, months: 11, days: 30 }