You don't (may not) need Moment.js

Moment.js is a fantastic time & date library with lots of great features and utilities. However, if you are working on a performance sensitive web application, it might cause a huge performance overhead because of its complex APIs and large bundle size.

Large bundle size

Problems with Moment.js:

It is highly based on OOP APIs, which makes it fail to work with tree-shaking, thus leading to a huge bundle size and performance issues.
It is mutable and it causes bugs:
- clone
- How do I work around mutability in moment.js?
Complex OOP API (which doubles mutability problem). Here is an example:
https://github.com/moment/moment/blob/develop/src/test/moment/add_subtract.js#L244-L286
Moment.js allows to use a.subtract('ms', 50), a.subtract(50, 'ms') and even a.subtract('s', '50').

If you are not using timezone but only a few simple functions from moment.js, this might bloat your app, and therefore is considered overkill. dayjs has a smaller core and has very similar APIs so it makes it very easy to migrate. date-fns enables tree-shaking and other benefits so that it works great with React, Sinon.js, and webpack, etc. See https://github.com/moment/moment/issues/2373 for more ideas on why and how people switch from moment.js to other solutions.

Brief Comparison, Name, Size original/gzipped, Tree-shaking, Popularity (stars), Methods richness, Pattern, Timezone Support, Locale, ----------------------------------------, --------------------------------, ------------, ------------------, ----------------, ----------, ----------------------, ------, Moment.js, 329K/69.6K, No, 43.4k, High, OO, Good (moment-timezone), 123, Luxon, 59.9K/17.2K, No, 9k, High, OO, Good (Intl), -, date-fns, 78.4k/13.4k without tree-shaking, Yes, 21.3k, High, Functional, Good (date-fns-tz), 64, dayjs, 6.5k/2.6k without plugins, No, 25.8k, High, OO, Not yet, 130, ## Voice of Developers

Removed moment.js to replace with date-fns - build output reduced by 40%

—Jared Farago from webnode project.

Good library if you’re looking to replace Moment.js for one reason or another. Immutable too.

—Dan Abramov, Author of Redux and co-author of Create React App. Building tools for humans.

I strongly recommend using date-fns over Moment.js, it's has a nicer API and you can include only parts you need!

—Matija Marohnić, a design-savvy frontend developer from Croatia.

Just yesterday changed momentjs to this lib in out project. Cut the size of our js bundle almost in half ?

—Sergey Petushkov, a javaScript developer from Moscow, Russia • Currently in Berlin, Germany.

ESLint Plugin

If you're using ESLint, you can install a
plugin that
will help you identify places in your codebase where you don't (may not) need Moment.js.

Install the plugin...

npm install --save-dev eslint-plugin-you-dont-need-momentjs

...then update your config

"extends" : ["plugin:you-dont-need-momentjs/recommended"],

Quick Links

Parse

String + Date Format
String + Time Format
String + Format + locale

Get + Set

Millisecond/Second/Minute/Hour
Date of Month
Day of Week
Day of Year
Week of Year
Days in Month
Weeks in Year
Maximum of the given dates
Minimum of the given dates

Manipulate

Add
Subtract
Start of Time
End of Time

Display

Format
Time from now
Time from X
Difference

Query

Is Before
Is Same
Is After
Is Between
Is Leap Year
Is a Date

Feature Parity

⚠️ Indicates other packages or work are needed. See individual functions above., Native, Luxon, date-fns, dayjs, ------------------------------, ------, -----, --------, -----, Parse, String + Date Format, ✅, ✅, ✅, ✅, String + Time Format, ✅, ✅, ✅, ⚠️, String + Format + locale, ❌, ⚠️, ✅, ⚠️, Get + Set, Millisecond/Second/Minute/Hour, ✅, ✅, ✅, ✅, Date of Month, ✅, ✅, ✅, ✅, Day of Week, ✅, ✅, ✅, ✅, Day of Year, ✅, ✅, ✅, ✅, Week of Year, ✅, ✅, ✅, ⚠️, Days in Month, ✅, ✅, ✅, ✅, Weeks in Year, ❌, ❌, ✅, ⚠️, Maximum of the given dates, ✅, ✅, ✅, ⚠️, Minimum of the given dates, ✅, ✅, ✅, ⚠️, Manipulate, Add, ✅, ✅, ✅, ✅, Subtract, ✅, ✅, ✅, ✅, Start of Time, ❌, ✅, ✅, ✅, End of Time, ✅, ✅, ✅, ✅, Display, Format, ❌, ✅, ✅, ✅, Time from now, ❌, ❌, ✅, ⚠️, Time from X, ❌, ❌, ✅, ⚠️, Difference, ✅, ✅, ✅, ✅, Query, Is Before, ✅, ✅, ✅, ✅, Is Same, ✅, ✅, ✅, ✅, Is After, ✅, ✅, ✅, ✅, Is Between, ❌, ✅, ✅, ⚠️, Is Leap Year, ✅, ✅, ✅, ⚠️, Is a Date, ✅, ✅, ✅, ✅, ## Parse

String + Date Format

Return the date parsed from date string using the given format string.

// Moment.js
moment('12-25-1995', 'MM-DD-YYYY');
// => "1995-12-24T13:00:00.000Z"

// Native
const datePattern = /^(\d{2})-(\d{2})-(\d{4})$/;
const [, month, day, year] = datePattern.exec('12-25-1995');
new Date(`${month}, ${day} ${year}`);
// => "1995-12-24T13:00:00.000Z"

// date-fns
import parse from 'date-fns/parse';
parse('12-25-1995', 'MM-dd-yyyy', new Date());
// => "1995-12-24T13:00:00.000Z"

// dayjs
dayjs('12-25-1995');
// => "1995-12-24T13:00:00.000Z"

// luxon
DateTime.fromFormat('12-25-1995', 'MM-dd-yyyy').toJSDate();
// => "1995-12-24T13:00:00.000Z"

⬆ back to top

String + Time Format

Return the date parsed from time string using the given format string.

// Moment.js
moment('2010-10-20 4:30', 'YYYY-MM-DD HH:mm');
// => "2010-10-19T17:30:00.000Z"

// Native
const datePattern = /^(\d{4})-(\d{2})-(\d{2})\s(\d{1,2}):(\d{2})$/;
const [, year, month, day, rawHour, min] = datePattern.exec('2010-10-20 4:30');
new Date(`${year}-${month}-${day}T${('0' + rawHour).slice(-2)}:${min}:00`);
// => "2010-10-19T17:30:00.000Z"

// date-fns
import parse from 'date-fns/parse';
parse('2010-10-20 4:30', 'yyyy-MM-dd H:mm', new Date());
// => "2010-10-19T17:30:00.000Z"

// dayjs ⚠️ requires customParseFormat plugin
import customParseFormat from 'dayjs/plugin/customParseFormat';
dayjs.extend(customParseFormat);
dayjs('2010-10-20 4:30', 'YYYY-MM-DD HH:mm');
// => "2010-10-19T17:30:00.000Z"

// luxon
DateTime.fromFormat('2010-10-20 4:30', 'yyyy-MM-dd H:mm').toJSDate();
// => "2010-10-19T17:30:00.000Z"

⬆ back to top

String + Format + locale

Return the date parsed from string using the given format string and locale.

// Moment.js
moment('2012 mars', 'YYYY MMM', 'fr');
// => "2012-02-29T13:00:00.000Z"

// date-fns
import parse from 'date-fns/parse';
import fr from 'date-fns/locale/fr';
parse('2012 mars', 'yyyy MMMM', new Date(), { locale: fr });
// => "2012-02-29T13:00:00.000Z"

// dayjs ⚠️ requires customParseFormat plugin
import customParseFormat from 'dayjs/plugin/customParseFormat';
import 'dayjs/locale/fr';
dayjs.extend(customParseFormat);
dayjs('2012 mars', 'YYYY MMM', 'fr');
// => "2012-02-29T13:00:00.000Z"

// Luxon ❌ does not support Locale for node unless https://moment.github.io/luxon/docs/manual/install.html#node
DateTime.fromFormat('2012 mars', 'yyyy MMMM', { locale: 'fr' });
// => "2012-02-29T13:00:00.000Z"

⬆ back to top

Get + Set

Millisecond / Second / Minute / Hour

Get the Millisecond/Second/Minute/Hour of the given date.

// Moment.js
moment().seconds();
// => 49
moment().hours();
// => 19

// Native
new Date().getSeconds();
// => 49
new Date().getHours();
// => 19

// date-fns
import getSeconds from 'date-fns/getSeconds';
import getHours from 'date-fns/getHours';
getSeconds(new Date());
// => 49
getHours(new Date());
// => 19

// dayjs
dayjs().second();
// => 49
dayjs().hour();
// => 19

// Luxon
DateTime.local().second;
// => 49
DateTime.local().hour;
// => 19

Performance tests, Library, Time, -------, ----------, Moment, 1500.703ms, Native, 348.411ms, DateFns, 520.670ms, DayJs, 494.234ms, Luxon, 1208.368ms, Set the `Millisecond/Second/Minute/Hour` of the given date.

// Moment.js
moment().seconds(30);
// => "2018-09-09T09:12:30.695Z"
moment().hours(13);
// => "2018-09-09T03:12:49.695Z"

// Native
new Date(new Date().setSeconds(30));
// => "2018-09-09T09:12:30.695Z"
new Date(new Date().setHours(13));
// => "2018-09-09T03:12:49.695Z"

// date-fns
import setSeconds from 'date-fns/setSeconds';
import setHours from 'date-fns/setHours';
setSeconds(new Date(), 30);
// => "2018-09-09T09:12:30.695Z"
setHours(new Date(), 13);
// => "2018-09-09T03:12:49.695Z"

// dayjs
dayjs().set('second', 30);
// => "2018-09-09T09:12:30.695Z"
dayjs().set('hour', 13);
// => "2018-09-09T03:12:49.695Z"

// luxon
DateTime.utc()
  .set({ second: 30 })
  .toJSDate();
// => "2018-09-09T09:12:30.695Z"
DateTime.utc()
  .set({ hour: 13 })
  .toJSDate();
// => "2018-09-09T03:12:49.695Z"

Performance tests, Library, Time, -------, ----------, Moment, 1689.744ms, Native, 636.741ms, DateFns, 714.148ms, DayJs, 2037.603ms, Luxon, 2897.571ms, ⬆ back to top

Date of Month

Gets or sets the day of the month.

// Moment.js
moment().date();
// => 9
moment().date(4);
// => "2018-09-04T09:12:49.695Z"

// Native
new Date().getDate();
// => 9
new Date().setDate(4);
// => "2018-09-04T09:12:49.695Z"

// date-fns
import getDate from 'date-fns/getDate';
import setDate from 'date-fns/setDate';
getDate(new Date());
// => 9
setDate(new Date(), 4);
// => "2018-09-04T09:12:49.695Z"

// dayjs
dayjs().date();
// => 9
dayjs().set('date', 4);
// => "2018-09-04T09:12:49.695Z"

// luxon
DateTime.utc().day;
// => 9
DateTime.utc()
  .set({ day: 4 })
  .toString();
// => "2018-09-04T09:12:49.695Z"

Performance tests, Library, Time, -------, ----------, Moment, 1381.669ms, Native, 397.415ms, DateFns, 588.004ms, DayJs, 1218.025ms, Luxon, 2705.606ms, ⬆ back to top

Day of Week

Gets or sets the day of the week.

// Moment.js
moment().day();
// => 0 (Sunday)
moment().day(-14);
// => "2018-08-26T09:12:49.695Z"

// Native
new Date().getDay();
// => 0 (Sunday)
new Date().setDate(new Date().getDate() - 14);
// => "2018-08-26T09:12:49.695Z"

// date-fns
import getDay from 'date-fns/getDay';
import setDay from 'date-fns/setDay';
getDay(new Date());
// => 0 (Sunday)
setDay(new Date(), -14);
// => "2018-08-26T09:12:49.695Z"

// dayjs
dayjs().day();
// => 0 (Sunday)
dayjs().set('day', -14);
// => "2018-08-26T09:12:49.695Z"

// Luxon
DateTime.local().weekday;
// => 7 (Sunday)
DateTime.local()
  .minus({ day: 14 })
  .toJSDate();
// => "2018-08-26T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 1919.404ms, Native, 543.466ms, DateFns, 841.436ms, DayJs, 1229.475ms, Luxon, 3936.282ms, **[⬆ back to top](#quick-links)**

### Day of Year

Gets or sets the day of the year.

```js
// Moment.js
moment().dayOfYear();
// => 252
moment().dayOfYear(256);
// => "2018-09-13T09:12:49.695Z"

// Native
Math.floor(
  (new Date() - new Date(new Date().getFullYear(), 0, 0)) / 1000 / 60 / 60 / 24
);
// => 252

// date-fns
import getDayOfYear from 'date-fns/getDayOfYear';
import setDayOfYear from 'date-fns/setDayOfYear';
getDayOfYear(new Date());
// => 252
setDayOfYear(new Date(), 256);
// => "2018-09-13T09:12:49.695Z"

// dayjs ⚠️ requires dayOfYear plugin
import dayOfYear from 'dayjs/plugin/dayOfYear';
dayjs.extend(dayOfYear);
dayjs().dayOfYear();
// => 252
dayjs().dayOfYear(256);
// => "2018-09-13T09:12:49.695Z"

// Luxon
DateTime.local().ordinal;
// => 252
DateTime.local()
  .set({ ordinal: 256 })
  .toString();
// => "2018-09-13T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 5511.172ms, Native, 530.592ms, DateFns, 2079.043ms, DayJs, -, Luxon, 3540.810ms, **[⬆ back to top](#quick-links)**

### Week of Year

Gets or sets the week of the year.

```js
// Moment.js
moment().week();
// => 37
moment().week(24);
// => "2018-06-10T09:12:49.695Z"

// date-fns
import getWeek from 'date-fns/getWeek';
import setWeek from 'date-fns/setWeek';
getWeek(new Date());
// => 37
setWeek(new Date(), 24);
// => "2018-06-10T09:12:49.695Z"

// native getWeek
const day = new Date();
const MILLISECONDS_IN_WEEK = 604800000;
const firstDayOfWeek = 1; // monday as the first day (0 = sunday)
const startOfYear = new Date(day.getFullYear(), 0, 1);
startOfYear.setDate(
  startOfYear.getDate() + (firstDayOfWeek - (startOfYear.getDay() % 7))
);
const dayWeek = Math.round((day - startOfYear) / MILLISECONDS_IN_WEEK) + 1;
// => 37

// native setWeek
const day = new Date();
const week = 24;
const MILLISECONDS_IN_WEEK = 604800000;
const firstDayOfWeek = 1; // monday as the first day (0 = sunday)
const startOfYear = new Date(day.getFullYear(), 0, 1);
startOfYear.setDate(
  startOfYear.getDate() + (firstDayOfWeek - (startOfYear.getDay() % 7))
);
const dayWeek = Math.round((day - startOfYear) / MILLISECONDS_IN_WEEK) + 1;
day.setDate(day.getDate() - (dayWeek - week) * 7);
day.toISOString();
// => "2018-06-10T09:12:49.794Z

// dayjs ⚠️ requires weekOfYear plugin
import weekOfYear from 'dayjs/plugin/weekOfYear';
dayjs.extend(weekOfYear);
dayjs().week();
// => 37
dayjs().week(24);
// => "2018-06-10T09:12:49.695Z"

// Luxon
DateTime.local().weekNumber;
// => 37
DateTime.local()
  .set({ weekNumber: 23 })
  .toString();
// => "2018-06-10T09:12:49.794Z
```, Library, Time, -------, ----------, Moment, 7147.201ms, Native, 1371.631ms, DateFns, 5834.815ms, DayJs, -, Luxon, 4514.771ms, **[⬆ back to top](#quick-links)**

### Days in Month

Get the number of days in the current month.

```js
// Moment.js
moment('2012-02', 'YYYY-MM').daysInMonth();
// => 29

// Native
new Date(2012, 02, 0).getDate();
// => 29

// date-fns
import getDaysInMonth from 'date-fns/getDaysInMonth';
getDaysInMonth(new Date(2012, 1));
// => 29

// dayjs
dayjs('2012-02').daysInMonth();
// => 29

// Luxon
DateTime.local(2012, 2).daysInMonth;
// => 29
```, Library, Time, -------, ----------, Moment, 4415.065ms, Native, 186.196ms, DateFns, 634.084ms, DayJs, 1922.774ms, Luxon, 1403.032ms, **[⬆ back to top](#quick-links)**

### Weeks in Year

Gets the number of weeks in the current year, according to ISO weeks.

```js
// Moment.js
moment().isoWeeksInYear();
// => 52

// date-fns
import getISOWeeksInYear from 'date-fns/getISOWeeksInYear';
getISOWeeksInYear(new Date());
// => 52

// dayjs ⚠️ requires isoWeeksInYear plugin
import isoWeeksInYear from 'dayjs/plugin/isoWeeksInYear';
dayjs.extend(isoWeeksInYear);
dayjs().isoWeeksInYear();
// => 52

// Moment.js
DateTime.local().weeksInWeekYear;
// => 52
```, Library, Time, -------, ----------, Moment, 1065.247ms, Native, -, DateFns, 4954.042ms, DayJs, -, Luxon, 1134.483ms, **[⬆ back to top](#quick-links)**

### Maximum of the given dates

Returns the maximum (most distant future) of the given date.

```js
const array = [
  new Date(2017, 4, 13),
  new Date(2018, 2, 12),
  new Date(2016, 0, 10),
  new Date(2016, 0, 9),
];
// Moment.js
moment.max(array.map(a => moment(a)));
// => "2018-03-11T13:00:00.000Z"

// Native
new Date(Math.max.apply(null, array)).toISOString();
// => "2018-03-11T13:00:00.000Z"

// date-fns
import max from 'date-fns/max';
max(array);
// => "2018-03-11T13:00:00.000Z"

// dayjs ⚠️ requires minMax plugin
import minMax from 'dayjs/plugin/minMax';
dayjs.extend(minMax);
dayjs.max(array.map(a => dayjs(a)));
// => "2018-03-11T13:00:00.000Z"

// Luxon
DateTime.max(...array.map(a => DateTime.fromJSDate(a))).toJSDate();
// => "2018-03-11T13:00:00.000Z"
```, Library, Time, -------, ----------, Moment, 1780.075ms, Native, 828.332ms, DateFns, 980.938ms, DayJs, -, Luxon, 2694.702ms, **[⬆ back to top](#quick-links)**

### Minimum of the given dates

Returns the minimum (most distant future) of the given date.

```js
const array = [
  new Date(2017, 4, 13),
  new Date(2018, 2, 12),
  new Date(2016, 0, 10),
  new Date(2016, 0, 9),
];
// Moment.js
moment.min(array.map(a => moment(a)));
// => "2016-01-08T13:00:00.000Z"

// Native
new Date(Math.min.apply(null, array)).toISOString();
// => "2016-01-08T13:00:00.000Z"

// date-fns
import min from 'date-fns/min';
min(array);
// => "2016-01-08T13:00:00.000Z"

// dayjs ⚠️ requires minMax plugin
import minMax from 'dayjs/plugin/minMax';
dayjs.extend(minMax);
dayjs.min(array.map(a => dayjs(a)));
// => "2016-01-08T13:00:00.000Z"

// Luxon
DateTime.min(...array.map(a => DateTime.fromJSDate(a))).toJSDate();
// => "2016-01-08T13:00:00.000Z"
```, Library, Time, -------, ----------, Moment, 1744.459ms, Native, 819.646ms, DateFns, 841.249ms, DayJs, -, Luxon, 2720.462ms, **[⬆ back to top](#quick-links)**

## Manipulate

### Add

Add the specified number of days to the given date.

```js
// Moment.js
moment().add(7, 'days');
// => "2018-09-16T09:12:49.695Z"

// Native
const now = new Date();
now.setDate(now.getDate() + 7);
// => "Sun Sep 16 2018 09:12:49"

// date-fns
import addDays from 'date-fns/addDays';
addDays(new Date(), 7);
// => "2018-09-16T09:12:49.695Z"

// dayjs
dayjs().add(7, 'day');
// => "2018-09-16T09:12:49.695Z"

// Luxon
DateTime.local()
  .plus({ day: 7 })
  .toJSDate();
// => "2018-09-16T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 1309.485ms, Native, 259.932ms, DateFns, 385.394ms, DayJs, 1911.881ms, Luxon, 3919.797ms, **[⬆ back to top](#quick-links)**

### Subtract

Subtract the specified number of days from the given date.

```js
// Moment.js
moment().subtract(7, 'days');
// => "2018-09-02T09:12:49.695Z"

// Native
new Date(new Date().getTime() - 1000 * 60 * 60 * 24 * 7);
// => Sun Sep 09 2018 09:12:49

// date-fns
import subDays from 'date-fns/subDays';
subDays(new Date(), 7);
// => "2018-09-02T09:12:49.695Z"

// dayjs
dayjs().subtract(7, 'day');
// => "2018-09-02T09:12:49.695Z"

// Luxon
DateTime.local()
  .minus({ day: 7 })
  .toJSDate();
// => "2018-09-02T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 1278.384ms, Native, 215.255ms, DateFns, 379.057ms, DayJs, 1772.593ms, Luxon, 4028.866ms, **[⬆ back to top](#quick-links)**

### Start of Time

Return the start of a unit of time for the given date.

```js
// Moment.js
moment().startOf('month');
// => "2018-08-31T14:00:00.000Z"

// date-fns
import startOfMonth from 'date-fns/startOfMonth';
startOfMonth(new Date());
// => "2018-08-31T14:00:00.000Z"

// dayjs
dayjs().startOf('month');
// => "2018-08-31T14:00:00.000Z"

// Luxon
DateTime.local().startOf('month');
// => "2018-09-02T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 1078.948ms, Native, -, DateFns, 398.107ms, DayJs, 765.358ms, Luxon, 2306.765ms, **[⬆ back to top](#quick-links)**

### End of Time

Return the end of a unit of time for the given date.

```js
// Moment.js
moment().endOf('day');
// => "2018-09-09T13:59:59.999Z"

// Native
const end = new Date();
end.setHours(23, 59, 59, 999);
end.toISOString();
// => "2018-09-09T16:59:59.999Z"

// date-fns
import endOfDay from 'date-fns/endOfDay';
endOfDay(new Date());
// => "2018-09-09T13:59:59.999Z"

// dayjs
dayjs().endOf('day');
// => "2018-09-09T13:59:59.999Z"

// Luxon
DateTime.local().endOf('day');
// => "2018-09-02T09:12:49.695Z"
```, Library, Time, -------, ----------, Moment, 1241.304ms, Native, 225.519ms, DateFns, 319.773ms, DayJs, 914.425ms, Luxon, 9920.529ms, **[⬆ back to top](#quick-links)**

## Display

### Format

Return the formatted date string in the given format.

```js
// Moment.js
moment().format('dddd, MMMM Do YYYY, h:mm:ss A');
// => "Sunday, September 9th 2018, 7:12:49 PM"
moment().format('ddd, hA');
// => "Sun, 7PM"

// date-fns
import format from 'date-fns/format';
format(new Date(), 'eeee, MMMM do YYYY, h:mm:ss aa');
// => "Sunday, September 9th 2018, 7:12:49 PM"
format(new Date(), 'eee, ha');
// => "Sun, 7PM"

// dayjs
dayjs().format('dddd, MMMM D YYYY, h:mm:ss A');
// => "Sunday, September 9 2018, 7:12:49 PM"
dayjs().format('ddd, hA');
// => "Sun, 7PM"
// dayjs ⚠️ requires advancedFormat plugin to support more format tokens
import advancedFormat from 'dayjs/plugin/customParseFormat';
dayjs.extend(advancedFormat);
dayjs().format('dddd, MMMM Do YYYY, h:mm:ss A');
// => "Sunday, September 9th 2018, 7:12:49 PM"

// Luxon
DateTime.fromMillis(time).toFormat('EEEE, MMMM dd yyyy, h:mm:ss a');
// => "Sunday, September 9 2018, 7:12:49 PM" ⚠️  not support 9th
DateTime.fromMillis(time).toFormat('EEE, ha');
// => "Sun, 7PM"

⬆ back to top

Time from now

Return time from now.

// Moment.js
moment(1536484369695).fromNow();
// => "4 days ago"

// date-fns
import formatDistance from 'date-fns/formatDistance';
formatDistance(new Date(1536484369695), new Date(), { addSuffix: true });
// => "4 days ago"

// dayjs ⚠️ requires relativeTime plugin
import relativeTime from 'dayjs/plugin/relativeTime';
dayjs.extend(relativeTime);

dayjs(1536484369695).fromNow();
// => "5 days ago" ⚠️  the rounding method of this plugin is different from moment.js and date-fns, use with care.

// luxon ❌ does not support relative time

⬆ back to top

Time from x

Return time from x.

// Moment.js
moment([2007, 0, 27]).to(moment([2007, 0, 29]));
// => "in 2 days"

// date-fns
import formatDistance from 'date-fns/formatDistance';
formatDistance(new Date(2007, 0, 27), new Date(2007, 0, 29));
// => "2 days"

// dayjs ⚠️ requires relativeTime plugin
import relativeTime from 'dayjs/plugin/relativeTime';
dayjs.extend(relativeTime);
dayjs('2007-01-27').to(dayjs('2007-01-29'));
// => "in 2 days"

// luxon ❌ does not support relative time

⬆ back to top

Difference

Get the unit of time between the given dates.

// Moment.js
moment([2007, 0, 27]).diff(moment([2007, 0, 29]));
// => -172800000
moment([2007, 0, 27]).diff(moment([2007, 0, 29]), 'days');
// => -2

// Native
new Date(2007, 0, 27) - new Date(2007, 0, 29);
// => -172800000
Math.ceil(
  (new Date(2007, 0, 27) - new Date(2007, 0, 29)) / 1000 / 60 / 60 / 24
);
// => -2

// date-fns
import differenceInMilliseconds from 'date-fns/differenceInMilliseconds';
differenceInMilliseconds(new Date(2007, 0, 27), new Date(2007, 0, 29));
// => -172800000
import differenceInDays from 'date-fns/differenceInDays';
differenceInDays(new Date(2007, 0, 27), new Date(2007, 0, 29));
// => -2

// dayjs
dayjs('2007-01-27').diff(dayjs('2007-01-29'), 'milliseconds');
// => -172800000
dayjs('2007-01-27').diff(dayjs('2007-01-29'), 'days');
// => -2

// luxon
DateTime.local(2007, 1, 27).diff(DateTime.local(2007, 1, 29)).milliseconds;
// => -172800000
DateTime.local(2007, 1, 27).diff(DateTime.local(2007, 1, 29), 'days').days;
// => -2

⬆ back to top

Query

Is Before

Check if a date is before another date.

// Moment.js
moment('2010-10-20').isBefore('2010-10-21');
// => true

// Native
new Date(2010, 10, 20) < new Date(2010, 10, 21);
// => true

// date-fns
import isBefore from 'date-fns/isBefore';
isBefore(new Date(2010, 9, 20), new Date(2010, 9, 21));
// => true

// dayjs
dayjs('2010-10-20').isBefore('2010-10-21');
// => true

// luxon
DateTime.fromISO('2010-10-20') < DateTime.fromISO('2010-10-21');
// => true

⬆ back to top

Is Same

Check if a date is the same as another date.

// Moment.js
moment('2010-10-20').isSame('2010-10-21');
// => false
moment('2010-10-20').isSame('2010-10-20');
// => true
moment('2010-10-20').isSame('2010-10-21', 'month');
// => true

// Native
new Date(2010, 9, 20).valueOf() === new Date(2010, 9, 21).valueOf();
// => false
new Date(2010, 9, 20).valueOf() === new Date(2010, 9, 20).valueOf();
// => true
new Date(2010, 9, 20).getTime() === new Date(2010, 9, 20).getTime();
// => true
new Date(2010, 9, 20).valueOf() === new Date(2010, 9, 20).getTime();
// => true
new Date(2010, 9, 20).toDateString().substring(4, 7) ===
  new Date(2010, 9, 21).toDateString().substring(4, 7);
// => true

// date-fns
import isSameDay from 'date-fns/isSameDay';
import isSameMonth from 'date-fns/isSameMonth';
isSameDay(new Date(2010, 9, 20), new Date(2010, 9, 21));
// => false
isSameDay(new Date(2010, 9, 20), new Date(2010, 9, 20));
// => true
isSameMonth(new Date(2010, 9, 20), new Date(2010, 9, 21));
// => true

// dayjs
dayjs('2010-10-20').isSame('2010-10-21');
// => false
dayjs('2010-10-20').isSame('2010-10-20');
// => true
dayjs('2010-10-20').isSame('2010-10-21', 'month');
// => true

// luxon
(+DateTime.fromISO('2010-10-20') ===
  +DateTime.fromISO('2010-10-21') +
    // => false
    DateTime.fromISO('2010-10-20')) ===
  +DateTime.fromISO('2010-10-20');
// => true
DateTime.fromISO('2010-10-20').hasSame(DateTime.fromISO('2010-10-21'), 'month');
// => true

⬆ back to top

Is After

Check if a date is after another date.

// Moment.js
moment('2010-10-20').isAfter('2010-10-19');
// => true

// Native
new Date(2010, 9, 20) > new Date(2010, 9, 19);
// => true

// date-fns
import isAfter from 'date-fns/isAfter';
isAfter(new Date(2010, 9, 20), new Date(2010, 9, 19));
// => true

// dayjs
dayjs('2010-10-20').isAfter('2010-10-19');
// => true

// luxon
DateTime.fromISO('2010-10-20') > DateTime.fromISO('2010-10-19');
// => true

⬆ back to top

Is Between

Check if a date is between two other dates.

// Moment.js
moment('2010-10-20').isBetween('2010-10-19', '2010-10-25');
// => true

// date-fns
import isWithinInterval from 'date-fns/isWithinInterval';
isWithinInterval(new Date(2010, 9, 20), {
  start: new Date(2010, 9, 19),
  end: new Date(2010, 9, 25),
});
// => true

// dayjs ⚠️ requires isBetween plugin
import isBetween from 'dayjs/plugin/isBetween';
dayjs.extend(isBetween);
dayjs('2010-10-20').isBetween('2010-10-19', '2010-10-25');
// => true

// luxon
Interval.fromDateTimes(
  DateTime.fromISO('2010-10-19'),
  DateTime.fromISO('2010-10-25')
).contains(DateTime.fromISO('2010-10-20'));
// => true

⬆ back to top

Is Leap Year

Check if a year is a leap year.

// Moment.js
moment([2000]).isLeapYear();
// => true

// Native
new Date(2000, 1, 29).getDate() === 29;
// => true

// date-fns
import isLeapYear from 'date-fns/isLeapYear';
isLeapYear(new Date(2000, 0, 1));
// => true

// dayjs ⚠️ requires isLeapYear plugin
import isLeapYear from 'dayjs/plugin/isLeapYear';
dayjs.extend(isLeapYear);
dayjs('2000-01-01').isLeapYear();
// => true

// luxon
expect(DateTime.local(2000).isInLeapYear).toBeTruthy();
// => true

⬆ back to top

Is a Date

Check if a variable is a native js Date object.

// Moment.js
moment.isDate(new Date());
// => true

// Native
new Date() instanceof Date;
// => true

// date-fns
import isDate from 'date-fns/isDate';
isDate(new Date());
// => true

// dayjs
dayjs(new Date()).isValid();

// luxon
DateTime.local().isValid;
// => true

⬆ back to top

License

MIT

Name With Owner	you-dont-need/You-Dont-Need-Momentjs
Primary Language	JavaScript
Program language	JavaScript (Language Count: 1)
Platform
License:	MIT License
Release Count	11
Last Release Name	v1.6.0 (Posted on 2020-03-04 23:37:48)
First Release Name	v1.0.3 (Posted on 2018-09-13 11:43:52)
Created At	2018-09-08 14:57:38
Pushed At	2023-12-01 10:45:12
Last Commit At	2023-12-01 21:45:12
Stargazers Count	13.2k
Watchers Count	140
Fork Count	315
Commits Count	290
Has Issues Enabled
Issues Count	50
Issue Open Count	26
Pull Requests Count	88
Pull Requests Open Count	4
Pull Requests Close Count	12
Has Wiki Enabled
Is Archived
Is Fork
Is Locked
Is Mirror
Is Private

You-Dont-Need-Momentjs

Github stars Tracking Chart

You don't (may not) need Moment.js

ESLint Plugin

Quick Links

Feature Parity

String + Date Format

String + Time Format

String + Format + locale

Get + Set

Millisecond / Second / Minute / Hour

Performance tests, Library, Time, -------, ----------, Moment, 1500.703ms, Native, 348.411ms, DateFns, 520.670ms, DayJs, 494.234ms, Luxon, 1208.368ms, Set the `Millisecond/Second/Minute/Hour` of the given date.

Performance tests, Library, Time, -------, ----------, Moment, 1689.744ms, Native, 636.741ms, DateFns, 714.148ms, DayJs, 2037.603ms, Luxon, 2897.571ms, ⬆ back to top

Date of Month

Performance tests, Library, Time, -------, ----------, Moment, 1381.669ms, Native, 397.415ms, DateFns, 588.004ms, DayJs, 1218.025ms, Luxon, 2705.606ms, ⬆ back to top

Day of Week

Time from now

Time from x

Difference

Query

Is Before

Is Same

Is After

Is Between

Is Leap Year

Is a Date

License

Overview

You-Dont-Need-Momentjs

Github stars Tracking Chart

You don't (may not) need Moment.js

ESLint Plugin

Quick Links

Feature Parity

String + Date Format

String + Time Format

String + Format + locale

Get + Set

Millisecond / Second / Minute / Hour

Performance tests, Library, Time, -------, ----------, Moment, 1500.703ms, Native, 348.411ms, DateFns, 520.670ms, DayJs, 494.234ms, Luxon, 1208.368ms, Set the Millisecond/Second/Minute/Hour of the given date.

Performance tests, Library, Time, -------, ----------, Moment, 1689.744ms, Native, 636.741ms, DateFns, 714.148ms, DayJs, 2037.603ms, Luxon, 2897.571ms, ⬆ back to top

Date of Month

Performance tests, Library, Time, -------, ----------, Moment, 1381.669ms, Native, 397.415ms, DateFns, 588.004ms, DayJs, 1218.025ms, Luxon, 2705.606ms, ⬆ back to top

Day of Week

Time from now

Time from x

Difference

Query

Is Before

Is Same

Is After

Is Between

Is Leap Year

Is a Date

License

Overview

Performance tests, Library, Time, -------, ----------, Moment, 1500.703ms, Native, 348.411ms, DateFns, 520.670ms, DayJs, 494.234ms, Luxon, 1208.368ms, Set the `Millisecond/Second/Minute/Hour` of the given date.