validate date - get date diff

[merajseraji]

how can I validate the date via this package?
for example in moment-jalali we should do this as you know:
moment(value, 'jYYYY/jMM/jDD').isValid()

or

how can I get the date difference?

[SaeedDev94]

For validating a jalali date you can use:
Utils#(year: number, month: number, date: number[, hours: number, minutes: number, seconds: number, ms: number])

For date difference: you can get js native Date: jalali.date