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67 lines
2.8 KiB
67 lines
2.8 KiB
import addDays from '../addDays/index.js';
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import addMonths from '../addMonths/index.js';
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import toDate from '../toDate/index.js';
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import requiredArgs from '../_lib/requiredArgs/index.js';
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import toInteger from '../_lib/toInteger/index.js';
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/**
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* @name add
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* @category Common Helpers
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* @summary Add the specified years, months, weeks, days, hours, minutes and seconds to the given date.
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*
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* @description
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* Add the specified years, months, weeks, days, hours, minutes and seconds to the given date.
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*
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* @param {Date|Number} date - the date to be changed
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* @param {Duration} duration - the object with years, months, weeks, days, hours, minutes and seconds to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
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*
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* | Key | Description |
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* |----------------|------------------------------------|
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* | years | Amount of years to be added |
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* | months | Amount of months to be added |
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* | weeks | Amount of weeks to be added |
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* | days | Amount of days to be added |
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* | hours | Amount of hours to be added |
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* | minutes | Amount of minutes to be added |
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* | seconds | Amount of seconds to be added |
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*
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* All values default to 0
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*
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* @returns {Date} the new date with the seconds added
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* @throws {TypeError} 2 arguments required
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*
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* @example
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* // Add the following duration to 1 September 2014, 10:19:50
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* var result = add(new Date(2014, 8, 1, 10, 19, 50), {
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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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* //=> Thu Jun 15 2017 15:29:20
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*/
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export default function add(dirtyDate, duration) {
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requiredArgs(2, arguments);
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if (!duration || typeof duration !== 'object') return new Date(NaN);
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var years = 'years' in duration ? toInteger(duration.years) : 0;
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var months = 'months' in duration ? toInteger(duration.months) : 0;
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var weeks = 'weeks' in duration ? toInteger(duration.weeks) : 0;
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var days = 'days' in duration ? toInteger(duration.days) : 0;
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var hours = 'hours' in duration ? toInteger(duration.hours) : 0;
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var minutes = 'minutes' in duration ? toInteger(duration.minutes) : 0;
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var seconds = 'seconds' in duration ? toInteger(duration.seconds) : 0; // Add years and months
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var date = toDate(dirtyDate);
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var dateWithMonths = months || years ? addMonths(date, months + years * 12) : date; // Add weeks and days
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var dateWithDays = days || weeks ? addDays(dateWithMonths, days + weeks * 7) : dateWithMonths; // Add days, hours, minutes and seconds
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var minutesToAdd = minutes + hours * 60;
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var secondsToAdd = seconds + minutesToAdd * 60;
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var msToAdd = secondsToAdd * 1000;
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var finalDate = new Date(dateWithDays.getTime() + msToAdd);
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return finalDate;
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} |