gitlab-ce/app/assets/javascripts/lib/utils/datetime/date_calculation_utility.js

852 lines
26 KiB
JavaScript

import { isNumber } from 'lodash';
import dateformat from '~/lib/dateformat';
import { __, n__ } from '~/locale';
import { getDayName, parseSeconds } from './date_format_utility';
const DAYS_IN_WEEK = 7;
export const DATE_ONLY_REGEX = /^\d{4}-\d{2}-\d{2}$/; // yyyy-mm-dd format
export const SECONDS_IN_DAY = 86400;
export const MILLISECONDS_IN_DAY = 24 * 60 * 60 * 1000;
/**
* Creates a new `Date` object.
* If a `Date` object is provided, then it is cloned.
*
* This function fixes a bug with the `Date` constructor where
* passing a date-only string results in a date 1 day behind
* for timezones that are behind UTC.
*
* From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date:
*
* > When the time zone offset is absent, **date-only forms are
* interpreted as a UTC time and date-time forms are interpreted
* as local time**. This is due to a historical spec error that
* was not consistent with ISO 8601 but could not be changed
* due to web compatibility.
*
* For example, the bug `new Date('2020-02-02')` results in
* `Sat Feb 01 2020 16:00:00 GMT-0800 (Pacific Standard Time)`
* for UTC-8 timezone.
*
* With this function, `newDate('2020-02-02')` results in
* `Wed Feb 02 2022 00:00:00 GMT-0800 (Pacific Standard Time)`
* for UTC-8 timezone.
*
* @param {string|number|Date} date
* @returns {Date|null|undefined} A Date object in local time
*/
export const newDate = (date) => {
if (date === null) {
return null;
}
if (date === undefined) {
return undefined;
}
// Fix historical bug so we return a local time for `yyyy-mm-dd` date-only strings
if (typeof date === 'string' && DATE_ONLY_REGEX.test(date)) {
const parts = date.split('-');
const year = parseInt(parts[0], 10);
const month = parseInt(parts[1], 10) - 1; // month is 0-indexed
const day = parseInt(parts[2], 10);
return new Date(year, month, day);
}
return new Date(date);
};
/**
* This method allows you to create new Date instance from existing
* date instance without keeping the reference.
*
* @param {Date} date
*/
export const cloneDate = (date) => (date instanceof Date ? new Date(date.getTime()) : new Date());
/**
* Returns number of days in a month for provided date.
* courtesy: https://stacko(verflow.com/a/1185804/414749
*
* @param {Date} date
*/
export const totalDaysInMonth = (date) => {
if (!date) {
return 0;
}
return new Date(date.getFullYear(), date.getMonth() + 1, 0).getDate();
};
/**
* Returns number of days in a quarter from provided
* months array.
*
* @param {Array} quarter
*/
export const totalDaysInQuarter = (quarter) =>
quarter.reduce((acc, month) => acc + totalDaysInMonth(month), 0);
/**
* Returns list of Dates referring to Sundays of the month
* based on provided date
*
* @param {Date} date
*/
export const getSundays = (date) => {
if (!date) {
return [];
}
const daysToSunday = [
__('Saturday'),
__('Friday'),
__('Thursday'),
__('Wednesday'),
__('Tuesday'),
__('Monday'),
__('Sunday'),
];
const month = date.getMonth();
const year = date.getFullYear();
const sundays = [];
const dateOfMonth = new Date(year, month, 1);
while (dateOfMonth.getMonth() === month) {
const dayName = getDayName(dateOfMonth);
if (dayName === __('Sunday')) {
sundays.push(new Date(dateOfMonth.getTime()));
}
const daysUntilNextSunday = daysToSunday.indexOf(dayName) + 1;
dateOfMonth.setDate(dateOfMonth.getDate() + daysUntilNextSunday);
}
return sundays;
};
/**
* Returns list of Dates representing a timeframe of months from startDate and length
* This method also supports going back in time when `length` is negative number
*
* @param {Date} initialStartDate
* @param {Number} length
*/
export const getTimeframeWindowFrom = (initialStartDate, length) => {
if (!(initialStartDate instanceof Date) || !length) {
return [];
}
const startDate = cloneDate(initialStartDate);
const moveMonthBy = length > 0 ? 1 : -1;
startDate.setDate(1);
startDate.setHours(0, 0, 0, 0);
// Iterate and set date for the size of length
// and push date reference to timeframe list
const timeframe = new Array(Math.abs(length)).fill().map(() => {
const currentMonth = startDate.getTime();
startDate.setMonth(startDate.getMonth() + moveMonthBy);
return new Date(currentMonth);
});
// Change date of last timeframe item to last date of the month
// when length is positive
if (length > 0) {
timeframe[timeframe.length - 1].setDate(totalDaysInMonth(timeframe[timeframe.length - 1]));
}
return timeframe;
};
/**
* Returns count of day within current quarter from provided date
* and array of months for the quarter
*
* Eg;
* If date is 15 Feb 2018
* and quarter is [Jan, Feb, Mar]
*
* Then 15th Feb is 46th day of the quarter
* Where 31 (days in Jan) + 15 (date of Feb).
*
* @param {Date} date
* @param {Array} quarter
*/
export const dayInQuarter = (date, quarter) => {
const dateValues = {
date: date.getDate(),
month: date.getMonth(),
};
return quarter.reduce((acc, month) => {
if (dateValues.month > month.getMonth()) {
return acc + totalDaysInMonth(month);
}
if (dateValues.month === month.getMonth()) {
return acc + dateValues.date;
}
return acc + 0;
}, 0);
};
export const millisecondsPerDay = 1000 * 60 * 60 * 24;
/**
* Calculates the number of days between 2 specified dates, excluding the current date
*
* @param {Date} startDate the earlier date that we will substract from the end date
* @param {Date} endDate the last date in the range
* @return {Number} number of days in between
*/
export const getDayDifference = (startDate, endDate) => {
const date1 = Date.UTC(startDate.getFullYear(), startDate.getMonth(), startDate.getDate());
const date2 = Date.UTC(endDate.getFullYear(), endDate.getMonth(), endDate.getDate());
return Math.floor((date2 - date1) / millisecondsPerDay);
};
/**
* Calculates the milliseconds between now and a given date string.
* The result cannot become negative.
*
* @param endDate date string that the time difference is calculated for
* @return {Number} number of milliseconds remaining until the given date
*/
export const calculateRemainingMilliseconds = (endDate) => {
const remainingMilliseconds = new Date(endDate).getTime() - Date.now();
return Math.max(remainingMilliseconds, 0);
};
/**
* Subtracts a given number of days from a given date and returns the new date.
*
* @param {Date} date the date that we will substract days from
* @param {Number} daysInPast number of days that are subtracted from a given date
* @returns {Date} Date in past as Date object
*/
export const getDateInPast = (date, daysInPast) =>
new Date(cloneDate(date).setDate(date.getDate() - daysInPast));
/**
* Adds a given number of days to a given date and returns the new date.
*
* @param {Date} date the date that we will add days to
* @param {Number} daysInFuture number of days that are added to a given date
* @returns {Date} Date in future as Date object
*/
export const getDateInFuture = (date, daysInFuture) =>
new Date(cloneDate(date).setDate(date.getDate() + daysInFuture));
/**
* Checks if a given date-instance was created with a valid date
*
* @param {Date} date
* @returns boolean
*/
export const isValidDate = (date) => date instanceof Date && !Number.isNaN(date.getTime());
export const beginOfDayTime = 'T00:00:00Z';
export const endOfDayTime = 'T23:59:59Z';
/**
* @param {Date} d1
* @param {Date} d2
* @param {Function} formatter
* @return {Any[]} an array of formatted dates between 2 given dates (including start&end date)
*/
export const getDatesInRange = (d1, d2, formatter = (x) => x) => {
if (!(d1 instanceof Date) || !(d2 instanceof Date)) {
return [];
}
let startDate = d1.getTime();
const endDate = d2.getTime();
const oneDay = 24 * 3600 * 1000;
const range = [d1];
while (startDate < endDate) {
startDate += oneDay;
range.push(new Date(startDate));
}
return range.map(formatter);
};
/**
* Converts the supplied number of seconds to milliseconds.
*
* @param {Number} seconds
* @return {Number} number of milliseconds
*/
export const secondsToMilliseconds = (seconds) => seconds * 1000;
/**
* Converts the supplied number of milliseconds to seconds.
*
* @param {Number} milliseconds
* @return {Number} number of seconds
*/
export const millisecondsToSeconds = (milliseconds) => milliseconds / 1000;
/**
* Converts the supplied number of seconds to days.
*
* @param {Number} seconds
* @return {Number} number of days
*/
export const secondsToDays = (seconds) => Math.round(seconds / 86400);
/**
* Returns the date `n` seconds after the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfSeconds number of seconds after
* @return {Date} A `Date` object `n` seconds after the provided `Date`
*/
export const nSecondsAfter = (date, numberOfSeconds) =>
new Date(date.getTime() + numberOfSeconds * 1000);
/**
* Returns the date `n` seconds before the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfSeconds number of seconds before
* @return {Date} A `Date` object `n` seconds before the provided `Date`
*/
export const nSecondsBefore = (date, numberOfSeconds) => nSecondsAfter(date, -numberOfSeconds);
/**
* Returns the date `n` hours after the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfHours number of hours after
* @return {Date} A `Date` object `n` hours after the provided `Date`
*/
export const nHoursAfter = (date, numberOfHours) => {
const clone = cloneDate(date);
clone.setHours(date.getHours() + numberOfHours);
return clone;
};
/**
* Returns the date `n` days after the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfDays number of days after
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} A `Date` object `n` days after the provided `Date`
*/
export const nDaysAfter = (date, numberOfDays, { utc = false } = {}) => {
const clone = cloneDate(date);
const cloneValue = utc
? clone.setUTCDate(date.getUTCDate() + numberOfDays)
: clone.setDate(date.getDate() + numberOfDays);
return new Date(cloneValue);
};
/**
* Returns the date `n` days before the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfDays number of days before
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
* @return {Date} A `Date` object `n` days before the provided `Date`
*/
export const nDaysBefore = (date, numberOfDays, options) =>
nDaysAfter(date, -numberOfDays, options);
/**
* Returns the date `n` months after the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfMonths number of months after
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} A `Date` object `n` months after the provided `Date`
*/
export const nMonthsAfter = (date, numberOfMonths, { utc = false } = {}) => {
const clone = cloneDate(date);
const cloneValue = utc
? clone.setUTCMonth(date.getUTCMonth() + numberOfMonths)
: clone.setMonth(date.getMonth() + numberOfMonths);
return new Date(cloneValue);
};
/**
* Returns the date `n` months before the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfMonths number of months before
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} A `Date` object `n` months before the provided `Date`
*/
export const nMonthsBefore = (date, numberOfMonths, options) =>
nMonthsAfter(date, -numberOfMonths, options);
/**
* Returns the date `n` weeks after the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfWeeks number of weeks after
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} A `Date` object `n` weeks after the provided `Date`
*/
export const nWeeksAfter = (date, numberOfWeeks, options) =>
nDaysAfter(date, DAYS_IN_WEEK * numberOfWeeks, options);
/**
* Returns the date `n` weeks before the date provided
*
* @param {Date} date the initial date
* @param {Number} numberOfWeeks number of weeks before
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} A `Date` object `n` weeks before the provided `Date`
*/
export const nWeeksBefore = (date, numberOfWeeks, options) =>
nWeeksAfter(date, -numberOfWeeks, options);
/**
* Returns the date `n` years after the date provided.
* When Feb 29 is the specified date, the default behaviour is to return March 1.
* But to align with the equivalent rails code, moment JS and datefns we should return Feb 28 instead.
*
* @param {Date} date the initial date
* @param {Number} numberOfYears number of years after
* @return {Date} A `Date` object `n` years after the provided `Date`
*/
export const nYearsAfter = (date, numberOfYears) => {
const clone = cloneDate(date);
clone.setUTCMonth(clone.getUTCMonth());
// If the date we are calculating from is Feb 29, return the equivalent result for Feb 28
if (clone.getUTCMonth() === 1 && clone.getUTCDate() === 29) {
clone.setUTCDate(28);
} else {
clone.setUTCDate(clone.getUTCDate());
}
clone.setUTCFullYear(clone.getUTCFullYear() + numberOfYears);
return clone;
};
/**
* Returns the date `n` years before the date provided.
*
* @param {Date} date the initial date
* @param {Number} numberOfYears number of years before
* @return {Date} A `Date` object `n` years before the provided `Date`
*/
export const nYearsBefore = (date, numberOfYears) => nYearsAfter(date, -numberOfYears);
/**
* Returns the date after the date provided
*
* @param {Date} date the initial date
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC dates.
* This will cause Daylight Saving Time to be ignored. Defaults to `false`
* if not provided, which causes the calculation to be performed in the
* user's timezone.
*
* @return {Date} the date following the date provided
*/
export const dayAfter = (date, options) => nDaysAfter(date, 1, options);
/**
* A utility function which computes the difference in seconds
* between 2 dates.
*
* @param {Date} startDate the start date
* @param {Date} endDate the end date
*
* @return {Int} the difference in seconds
*/
export const differenceInSeconds = (startDate, endDate) => {
return (endDate.getTime() - startDate.getTime()) / 1000;
};
export const differenceInMinutes = (startDate, endDate) => {
return Math.ceil(differenceInSeconds(startDate, endDate) / 60);
};
/**
* A utility function which computes the difference in months
* between 2 dates.
*
* @param {Date} startDate the start date
* @param {Date} endDate the end date
*
* @return {Int} the difference in months
*/
export const differenceInMonths = (startDate, endDate) => {
const yearDiff = endDate.getYear() - startDate.getYear();
const monthDiff = endDate.getMonth() - startDate.getMonth();
return monthDiff + 12 * yearDiff;
};
/**
* A utility function which computes the difference in milliseconds
* between 2 dates.
*
* @param {Date|Int} startDate the start date. Can be either a date object or a unix timestamp.
* @param {Date|Int} endDate the end date. Can be either a date object or a unix timestamp. Defaults to now.
*
* @return {Int} the difference in milliseconds
*/
export const differenceInMilliseconds = (startDate, endDate = Date.now()) => {
const startDateInMS = startDate instanceof Date ? startDate.getTime() : startDate;
const endDateInMS = endDate instanceof Date ? endDate.getTime() : endDate;
return endDateInMS - startDateInMS;
};
/**
* A utility which returns a new date at the first day of the month for any given date.
*
* @param {Date} date
*
* @return {Date} the date at the first day of the month
*/
export const dateAtFirstDayOfMonth = (date) => new Date(cloneDate(date).setDate(1));
/**
* A utility function which checks if two dates match.
*
* @param {Date|Int} date1 Can be either a date object or a unix timestamp.
* @param {Date|Int} date2 Can be either a date object or a unix timestamp.
*
* @return {Boolean} true if the dates match
*/
export const datesMatch = (date1, date2) => differenceInMilliseconds(date1, date2) === 0;
/**
* Mimics the behaviour of the rails distance_of_time_in_words function
* https://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html#method-i-distance_of_time_in_words
* 0 < -> 29 secs => less than a minute
* 30 secs < -> 1 min, 29 secs => 1 minute
* 1 min, 30 secs < -> 44 mins, 29 secs => [2..44] minutes
* 44 mins, 30 secs < -> 89 mins, 29 secs => about 1 hour
* 89 mins, 30 secs < -> 23 hrs, 59 mins, 29 secs => about[2..24]hours
* 23 hrs, 59 mins, 30 secs < -> 41 hrs, 59 mins, 29 secs => 1 day
* 41 hrs, 59 mins, 30 secs => x days
*
* @param {Number} seconds
* @return {String} approximated time
*/
export const approximateDuration = (seconds = 0) => {
if (!isNumber(seconds) || seconds < 0) {
return '';
}
const ONE_MINUTE_LIMIT = 90; // 1 minute 30s
const MINUTES_LIMIT = 2670; // 44 minutes 30s
const ONE_HOUR_LIMIT = 5370; // 89 minutes 30s
const HOURS_LIMIT = 86370; // 23 hours 59 minutes 30s
const ONE_DAY_LIMIT = 151170; // 41 hours 59 minutes 30s
const {
days = 0,
hours = 0,
minutes = 0,
} = parseSeconds(seconds, {
daysPerWeek: 7,
hoursPerDay: 24,
limitToDays: true,
});
if (seconds < 30) {
return __('less than a minute');
}
if (seconds < MINUTES_LIMIT) {
return n__('1 minute', '%d minutes', seconds < ONE_MINUTE_LIMIT ? 1 : minutes);
}
if (seconds < HOURS_LIMIT) {
return n__('about 1 hour', 'about %d hours', seconds < ONE_HOUR_LIMIT ? 1 : hours);
}
return n__('1 day', '%d days', seconds < ONE_DAY_LIMIT ? 1 : days);
};
/**
* A utility function which computes a formatted 24 hour
* time string from a positive int in the range 0 - 24.
*
* @param {Int} time a positive Int between 0 and 24
*
* @returns {String} formatted 24 hour time String
*/
export const format24HourTimeStringFromInt = (time) => {
if (!Number.isInteger(time) || time < 0 || time > 24) {
return '';
}
const formatted24HourString = time > 9 ? `${time}:00` : `0${time}:00`;
return formatted24HourString;
};
/**
* A utility function that checks that the date is today
*
* @param {Date} date
*
* @return {Boolean} true if provided date is today
*/
export const isToday = (date) => {
const today = new Date();
return (
date.getDate() === today.getDate() &&
date.getMonth() === today.getMonth() &&
date.getFullYear() === today.getFullYear()
);
};
/**
* Checks whether the date is in the past.
*
* @param {Date} date
* @return {Boolean} Returns true if the date falls before today, otherwise false.
*/
export const isInPast = (date) => !isToday(date) && differenceInMilliseconds(date, Date.now()) > 0;
/**
* Checks whether the date is in the future.
* .
* @param {Date} date
* @return {Boolean} Returns true if the date falls after today, otherwise false.
*/
export const isInFuture = (date) =>
!isToday(date) && differenceInMilliseconds(Date.now(), date) > 0;
/**
* Checks whether dateA falls before dateB.
*
* @param {Date} dateA
* @param {Date} dateB
* @return {Boolean} Returns true if dateA falls before dateB, otherwise false
*/
export const fallsBefore = (dateA, dateB) => differenceInMilliseconds(dateA, dateB) > 0;
/**
* Checks whether date falls in the `start -> end` time period.
*
* @param {Date} date
* @param {Date} start
* @param {Date} end
* @return {Boolean} Returns true if date falls in the time period, otherwise false
*/
export const isInTimePeriod = (date, start, end) =>
differenceInMilliseconds(start, date) >= 0 && differenceInMilliseconds(date, end) >= 0;
/**
* Removes the time component of the date.
*
* @param {Date} date
* @return {Date} Returns a clone of the date with the time set to midnight
*/
export const removeTime = (date) => {
const clone = cloneDate(date);
clone.setHours(0, 0, 0, 0);
return clone;
};
/**
* Returns the start of the provided day
*
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC time.
* If `true`, the time returned will be midnight UTC. If `false` (the default)
* the time returned will be midnight in the user's local time.
*
* @returns {Date} A new `Date` object that represents the start of the day
* of the provided date
*/
export const getStartOfDay = (date, { utc = false } = {}) => {
const clone = cloneDate(date);
const cloneValue = utc ? clone.setUTCHours(0, 0, 0, 0) : clone.setHours(0, 0, 0, 0);
return new Date(cloneValue);
};
/**
* Returns the start of the current week against the provide date
*
* @param {Date} date The current date instance to calculate against
* @param {Object} [options={}] Additional options for this calculation
* @param {boolean} [options.utc=false] Performs the calculation using UTC time.
* If `true`, the time returned will be midnight UTC. If `false` (the default)
* the time returned will be midnight in the user's local time.
*
* @returns {Date} A new `Date` object that represents the start of the current week
* of the provided date
*/
export const getStartOfWeek = (date, { utc = false } = {}) => {
const cloneValue = utc
? new Date(date.setUTCHours(0, 0, 0, 0))
: new Date(date.setHours(0, 0, 0, 0));
const diff = cloneValue.getDate() - cloneValue.getDay() + (cloneValue.getDay() === 0 ? -6 : 1);
return new Date(date.setDate(diff));
};
/**
* Calculates the time remaining from today in words in the format
* `n days/weeks/months/years remaining`.
*
* @param {Date} date A date in future
* @return {String} The time remaining in the format `n days/weeks/months/years remaining`
*/
export const getTimeRemainingInWords = (date) => {
const today = removeTime(new Date());
const dateInFuture = removeTime(date);
const oneWeekFromNow = nWeeksAfter(today, 1);
const oneMonthFromNow = nMonthsAfter(today, 1);
const oneYearFromNow = nYearsAfter(today, 1);
if (fallsBefore(dateInFuture, oneWeekFromNow)) {
const days = getDayDifference(today, dateInFuture);
return n__('1 day remaining', '%d days remaining', days);
}
if (fallsBefore(dateInFuture, oneMonthFromNow)) {
const weeks = Math.floor(getDayDifference(today, dateInFuture) / 7);
return n__('1 week remaining', '%d weeks remaining', weeks);
}
if (fallsBefore(dateInFuture, oneYearFromNow)) {
const months = differenceInMonths(today, dateInFuture);
return n__('1 month remaining', '%d months remaining', months);
}
const years = dateInFuture.getFullYear() - today.getFullYear();
return n__('1 year remaining', '%d years remaining', years);
};
/**
* Returns the current date according to UTC time at midnight
* @return {Date} The current date in UTC
*/
export const getCurrentUtcDate = () => {
const now = new Date();
return new Date(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate());
};
/**
* Returns an array of months between startDate and endDate.
*
* @returns {Array<Object>} An array of objects representing months, each containing:
* - month {number} - 0-based index (0-11)
* - year {number} - The year
*
* @example
* getMonthsBetweenDates(new Date('2024-01-01'), new Date('2024-03-05'))
* returns [
{
"month": 0,
"year": 2024,
},
{
"month": 1,
"year": 2024,
},
{
"month": 2,
"year": 2024,
}
]
*/
export function getMonthsBetweenDates(startDate, endDate) {
if (startDate > endDate) {
return [];
}
const startMonth = startDate.getMonth();
const startYear = startDate.getFullYear();
const endMonth = endDate.getMonth();
const endYear = endDate.getFullYear();
const count = (endYear - startYear) * 12 + (1 + endMonth - startMonth);
return Array(count)
.fill(1)
.map((_, idx) => {
const month = (idx + startMonth) % 12;
const yearOffset = Math.floor((idx + startMonth) / 12);
return {
month,
year: startYear + yearOffset,
};
});
}
export function convertNanoToMs(nano) {
return nano / 1e6;
}
export function convertMsToNano(ms) {
return ms * 1e6;
}
export const isValidDateString = (dateString) => {
if (typeof dateString !== 'string' || !dateString.trim()) {
return false;
}
let isoFormatted;
try {
isoFormatted = dateformat(dateString, 'isoUtcDateTime');
} catch (e) {
if (e instanceof TypeError) {
// not a valid date string
return false;
}
throw e;
}
return !Number.isNaN(Date.parse(isoFormatted));
};
/**
* Converts the given number of days to seconds.
*
* @param {number} days Number of days to convert
*
* @returns {number} The equivalent number of seconds
*/
export const daysToSeconds = (days) => SECONDS_IN_DAY * days;