73 lines
2.3 KiB
JavaScript
73 lines
2.3 KiB
JavaScript
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import { subDays } from "./subDays.mjs";
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import { subMonths } from "./subMonths.mjs";
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import { constructFrom } from "./constructFrom.mjs";
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/**
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* @name sub
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* @category Common Helpers
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* @summary Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date.
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*
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* @description
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* Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date.
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*
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* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
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*
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* @param date - The date to be changed
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* @param duration - The object with years, months, weeks, days, hours, minutes and seconds to be subtracted
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*
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* | Key | Description |
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* |---------|------------------------------------|
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* | years | Amount of years to be subtracted |
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* | months | Amount of months to be subtracted |
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* | weeks | Amount of weeks to be subtracted |
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* | days | Amount of days to be subtracted |
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* | hours | Amount of hours to be subtracted |
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* | minutes | Amount of minutes to be subtracted |
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* | seconds | Amount of seconds to be subtracted |
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*
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* All values default to 0
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*
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* @returns The new date with the seconds subtracted
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*
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* @example
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* // Subtract the following duration from 15 June 2017 15:29:20
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* const result = sub(new Date(2017, 5, 15, 15, 29, 20), {
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* years: 2,
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* months: 9,
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* weeks: 1,
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* days: 7,
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* hours: 5,
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* minutes: 9,
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* seconds: 30
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* })
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* //=> Mon Sep 1 2014 10:19:50
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*/
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export function sub(date, duration) {
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const {
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years = 0,
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months = 0,
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weeks = 0,
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days = 0,
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hours = 0,
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minutes = 0,
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seconds = 0,
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} = duration;
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// Subtract years and months
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const dateWithoutMonths = subMonths(date, months + years * 12);
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// Subtract weeks and days
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const dateWithoutDays = subDays(dateWithoutMonths, days + weeks * 7);
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// Subtract hours, minutes and seconds
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const minutestoSub = minutes + hours * 60;
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const secondstoSub = seconds + minutestoSub * 60;
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const mstoSub = secondstoSub * 1000;
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const finalDate = constructFrom(date, dateWithoutDays.getTime() - mstoSub);
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return finalDate;
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}
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// Fallback for modularized imports:
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export default sub;
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