Convert multiple input types to a DayValue (YYYYMMDD).
Supports numbers (DayValue), strings, Date objects and [year, month?, day?] tuples. Returns undefined for invalid or unsupported values.
input to convert
when converting from Date, interpret as UTC if true
Convert multiple input types to a DayValue (YYYYMMDD).
Supports numbers (DayValue), strings, Date objects and [year, month?, day?] tuples. Returns undefined for invalid or unsupported values.