When I had been building web apps on React since 2020 I used to manipulate dates with heavy and powerful library Moment.js
I had met a lot of issues and limits working with it and decided to create something to use instead on JavaScript
JavaScript library to handling, parsing, validation, formatting date or time.
- Light and powerful analogue of Moment.js
- Current Version: 1.2.3
https://www.npmjs.com/package/datus.js - npmjs
https://github.com/Slavus54/datus.js - github repository
import {Datus} from 'datus.js' or const {Datus} = require('datus.js')
const datus = new Datus()
import {weekdaysTitles, weekdaysTags, dayParts, months, minutesMin, minutesMax, periods, seasons} from 'datus.js'
let counter = 0
let date = datus.move() // to set today's date also use .timestamp('date')
counter = Number(typeof null === 'object') // JS is awesome
date = datus.move('week', '+', counter) // a week later
let currentOrder = { title: 'Pizza Mozzarella 32cm', name: 'Anna', timestamp: 623 } // Tomash works until 12:00, does he pick up an order?
let check: boolean = currentOrder.timestamp <= datus.time('12:00', 'deconvert') // yes, Anna won't go hungry
let events = [{title: 'Battle of Marengo', date: '14.06.1800'}, {title: 'Battle of Austerlitz', date: '02.12.1805'}]
let filtered = events.filter(el => datus.filter(el.date, 'month', 12)) // filtered battles on December
-move (flag = 'day', direction = '+', num = 0) - run through the calendar in all directions, return date.
-gap (weekday = null, key = 'tag') - return difference between weekday and today in days, key parameter is a variant of day calling (tag or title).
-dates (flag = 'week', num = 2, weekday = null) - create an array of dates since weekday (today by default) with time period iterations by flag ('day', 'week' or 'month'). num is a number of dates.
-filter (date = '22.02.2024', period = 'day', value = 22) - filter date by period with int value and return true/false.
-difference (date, flag = 'day', lock = 10) - find difference in flag time period (by default days) between today and date in past or future. lock is a integer limit of inside date iterations to compare with date.
-day (key = 'start', size = 'hour') - returned number of hours/minutes/seconds after day starts (key = 'start') or until its end (key = 'end').
-time (value = null, key = 'convert', isTwelve = false) - received value in minutes and convert it to HH:MM format, or if key equal 'deconvert' it returned number of minutes. Flag isTwelve is for US time format.
-times (start = '00:00', period = 30, num = 10) - returned array of timestamps in HH:MM format beginning from start time with period in minutes, num - size of array.
-random (isTime = true, num = 5) - returned array of random dates (last 30 days) or times in HH:MM format.
-range (dates = [], period = 'day') - returned difference between smallest and largest integer value of date's period ('day', 'month' or 'year') in array of unsorted dates.
-convert (value = null, key = 'convert') - convert Indian number to Roman and reverse, return string by default or number.
-border (num = null, isRome = false) - receives century (number Indian or string Roman) and returns array of first and last year of century.
-century (year = 1000, isRome = false) - return century in Roman/Indian format by year (number).
-timestamp (format = 'all', divider = '|) - returns current date or time and divides it by second parameter.
-utc - returns Promise with european towns's timezones.
-distinction (time = '', utc = 0, isNum = true) - counts difference time between utc event and now; returns object with distinction in format (number of minutes or text) and flag {result, isGone}.
-event (time = '12:00', duration = 90, utc = 1) - returns number of events that can be completed before utc time (by default CET).
-palindrom (value = '', isDate = true) - check if date or time is palindrom and return true/false.
-binary (value = '', isDate = true) - check if each parts of date or time is equal 2**power (binary) and return true/false.
-exchange (num = 10, from = 'minute', to = 'hour') - receives value in first period and exchange it for second.
-clock (value = 10, arrow = 'hour', isPositive = true) - returns degrees between 3 a.m. and hour/minute arrows by value in minute on clock.
-formula (start = '12:00', duration = 0, body = 'x + y - 1', size = 'minute') - substitution into formulas body start to x and duration to y, return result as time string.
-sequence (start = '12:00', interval = 10, num = 5, mask = ':30') - generates list of times with interval and checking each element on mask.
-format (value = '', key = 'default', isDate = true) - formatting and returns date and time by key: 'letter' for date and 'us' for time.
-pointer (text = 'today') - formatting and returns date with word-pointer.
-part (num = 0, size = 'day') - returns % of year (check for leap year) for any period.
-duration (distance = 10, speed = 1, size = 'hour') - solves problem to count duration in any format when we have distance (in km) and speed (km/h).
-term (num = 10) - receives number border and returns an object with random {value, period} to get any term.
-walking (value = 10, size = 'minute', speed = '*') - received time period and returns number of steps to walking while it.
-timus (birthdate = '02.12.2004') - received date of birth and returns your personal Number of Datus.
-hash (value = '', isDate = true, multiplier = 1) - simple hash-function with good avalance effect based on date/time string.
-year (difference = 0) - returns an object {year, isLeap}, by difference parameter you can get more ancient year.
-months (length = 12, isTitle = false) - allows to get an array of months (title or number) since year beginning, slices and returns it in descending order.
-nearest (time = '', arr = [], key = '') - finds among timestamps the most close to given time (after it) and returns it.
-bit (content = '', isDate = false) - returns converted time/date string parts to binary.
-pomodoro (time = '', num = 1, duration = 25, pause = 5, rest = 15) - according settings gives array of timestamps of tasks beginning.
-info (text = '', isDate = true) - returns an object with actual information about time/date.
-us (content = '', isDate = true, isRange = false) - converts time or date into american format.
-isWillBe (date = '24.08.2024') - checking and returns true/false by proviso "Date is today or will be in the future".
-num (digit = 1) - randomly generates integer 0 <= x <= 8991, choosing multiplier inside method's formula by parameter digit.
-reading (text = '', isNum = true) - returns minutes of text's reading duration in different formats.
-cat (date = '', max = 100) - converts duration of cat's life (starts by parameter date) into human age according life expectancy by parameter max.
-war (size = 'day') - returns number of days or any other period type by parameter size since russian-ukrainian war starts.