refactor: improve time.ts typings

src/constants.ts

@@ -0,0 +1,81 @@
+export const CONSTRAINTS = Object.freeze({
+	second: [0, 59],
+	minute: [0, 59],
+	hour: [0, 23],
+	dayOfMonth: [1, 31],
+	month: [1, 12],
+	dayOfWeek: [0, 7]
+} as const);
+export const MONTH_CONSTRAINTS = Object.freeze({
+	1: 31,
+	2: 29, // support leap year...not perfect
+	3: 31,
+	4: 30,
+	5: 31,
+	6: 30,
+	7: 31,
+	8: 31,
+	9: 30,
+	10: 31,
+	11: 30,
+	12: 31
+} as const);
+export const PARSE_DEFAULTS = Object.freeze({
+	second: '0',
+	minute: '*',
+	hour: '*',
+	dayOfMonth: '*',
+	month: '*',
+	dayOfWeek: '*'
+} as const);
+export const ALIASES = Object.freeze({
+	jan: 1,
+	feb: 2,
+	mar: 3,
+	apr: 4,
+	may: 5,
+	jun: 6,
+	jul: 7,
+	aug: 8,
+	sep: 9,
+	oct: 10,
+	nov: 11,
+	dec: 12,
+	sun: 0,
+	mon: 1,
+	tue: 2,
+	wed: 3,
+	thu: 4,
+	fri: 5,
+	sat: 6
+} as const);
+export const TIME_UNITS_MAP = Object.freeze({
+	SECOND: 'second',
+	MINUTE: 'minute',
+	HOUR: 'hour',
+	DAY_OF_MONTH: 'dayOfMonth',
+	MONTH: 'month',
+	DAY_OF_WEEK: 'dayOfWeek'
+} as const);
+export const TIME_UNITS = Object.freeze(Object.values(TIME_UNITS_MAP)) as [
+	'second',
+	'minute',
+	'hour',
+	'dayOfMonth',
+	'month',
+	'dayOfWeek'
+];
+export const TIME_UNITS_LEN: number = TIME_UNITS.length;
+export const PRESETS = Object.freeze({
+	'@yearly': '0 0 0 1 1 *',
+	'@monthly': '0 0 0 1 * *',
+	'@weekly': '0 0 0 * * 0',
+	'@daily': '0 0 0 * * *',
+	'@hourly': '0 0 * * * *',
+	'@minutely': '0 * * * * *',
+	'@secondly': '* * * * * *',
+	'@weekdays': '0 0 0 * * 1-5',
+	'@weekends': '0 0 0 * * 0,6'
+} as const);
+export const RE_WILDCARDS = /\*/g;
+export const RE_RANGE = /^(\d+)(?:-(\d+))?(?:\/(\d+))?$/g;