Parses CronYear into a string.
CronYear
parseCronYear(1989); // "1989"parseCronYear("*"); // "*"parseCronYear({ every: 10, start: 1989 }); // "1989/10"parseCronYear({ every: 10, start: "?" }); // "?/10"parseCronYear([1989, 1991, 2015, 2020]); // "1989,1991,2015,2020"parseCronYear({ from: 1989, to: 2020 }); // "1989-2020"parseCronYear([ 1989, 1989, 1991, 2015, 2020, { from: 1989, to: 2020 },]); // "1989,1991,2015,2020,1989-2020"
A string or undefined if invalid.
undefined
CronYear to be parsed.
Parses
CronYear
into a string.Example
Returns
A string or
undefined
if invalid.