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					66 lines
				
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					66 lines
				
				2.6 KiB
			| 
											3 years ago
										 | import subDays from '../subDays/index.js'; | ||
|  | import subMonths from '../subMonths/index.js'; | ||
|  | import toDate from '../toDate/index.js'; | ||
|  | import requiredArgs from '../_lib/requiredArgs/index.js'; | ||
|  | import toInteger from '../_lib/toInteger/index.js'; | ||
|  | /** | ||
|  |  * @name sub | ||
|  |  * @category Common Helpers | ||
|  |  * @summary Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date. | ||
|  |  * | ||
|  |  * @description | ||
|  |  * Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date. | ||
|  |  * | ||
|  |  * @param {Date|Number} date - the date to be changed | ||
|  |  * @param {Duration} duration - the object with years, months, weeks, days, hours, minutes and seconds to be subtracted | ||
|  |  * | ||
|  |  * | Key     | Description                        | | ||
|  |  * |---------|------------------------------------| | ||
|  |  * | years   | Amount of years to be subtracted   | | ||
|  |  * | months  | Amount of months to be subtracted  | | ||
|  |  * | weeks   | Amount of weeks to be subtracted   | | ||
|  |  * | days    | Amount of days to be subtracted    | | ||
|  |  * | hours   | Amount of hours to be subtracted   | | ||
|  |  * | minutes | Amount of minutes to be subtracted | | ||
|  |  * | seconds | Amount of seconds to be subtracted | | ||
|  |  * | ||
|  |  * All values default to 0 | ||
|  |  * | ||
|  |  * @returns {Date} the new date with the seconds subtracted | ||
|  |  * @throws {TypeError} 2 arguments required | ||
|  |  * | ||
|  |  * @example | ||
|  |  * // Subtract the following duration from 15 June 2017 15:29:20
 | ||
|  |  * const result = sub(new Date(2017, 5, 15, 15, 29, 20), { | ||
|  |  *   years: 2, | ||
|  |  *   months: 9, | ||
|  |  *   weeks: 1, | ||
|  |  *   days: 7, | ||
|  |  *   hours: 5, | ||
|  |  *   minutes: 9, | ||
|  |  *   seconds: 30 | ||
|  |  * }) | ||
|  |  * //=> Mon Sep 1 2014 10:19:50
 | ||
|  |  */ | ||
|  | 
 | ||
|  | export default function sub(dirtyDate, duration) { | ||
|  |   requiredArgs(2, arguments); | ||
|  |   if (!duration || typeof duration !== 'object') return new Date(NaN); | ||
|  |   var years = 'years' in duration ? toInteger(duration.years) : 0; | ||
|  |   var months = 'months' in duration ? toInteger(duration.months) : 0; | ||
|  |   var weeks = 'weeks' in duration ? toInteger(duration.weeks) : 0; | ||
|  |   var days = 'days' in duration ? toInteger(duration.days) : 0; | ||
|  |   var hours = 'hours' in duration ? toInteger(duration.hours) : 0; | ||
|  |   var minutes = 'minutes' in duration ? toInteger(duration.minutes) : 0; | ||
|  |   var seconds = 'seconds' in duration ? toInteger(duration.seconds) : 0; // Subtract years and months
 | ||
|  | 
 | ||
|  |   var dateWithoutMonths = subMonths(toDate(dirtyDate), months + years * 12); // Subtract weeks and days
 | ||
|  | 
 | ||
|  |   var dateWithoutDays = subDays(dateWithoutMonths, days + weeks * 7); // Subtract hours, minutes and seconds
 | ||
|  | 
 | ||
|  |   var minutestoSub = minutes + hours * 60; | ||
|  |   var secondstoSub = seconds + minutestoSub * 60; | ||
|  |   var mstoSub = secondstoSub * 1000; | ||
|  |   var finalDate = new Date(dateWithoutDays.getTime() - mstoSub); | ||
|  |   return finalDate; | ||
|  | } |