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4.4.0

This release revisits the approach to CDN usage and introduces a new package, @date-fns/cdn and deprecates the date-fns CDN scripts. It allowed reducing the zipped package size from 5.83 MB down to 3.96 MB without introducing any breaking changes.

In v5.0.0-alpha.0 where CDN scripts are completely removed from date-fns the change is more significant and brings the zipped package size down to 2.89 MB.

It is just the first step in optimizing the package size. Expect further size reduction in the future v4 and v5 versions.

Changed

• DEPRECATED: The date-fns CDN scripts are now deprecated and will be removed in the next major release. Please switch to the new @date-fns/cdn package for CDN usage.

• Removed CDN source maps to reduce the package size. If you rely on them, please switch to the new @date-fns/cdn package that still includes them.

4.3.0

Kudos to @ImRodry and @puneetdixit200 for their contributions.

Fixed

• Fixed missing modularized optimization fallback (for Next.js and others). See #4193.

• Fixed pt locale first day of week to be Sunday. See #4195 by @ImRodry.

• Fixed zh-CN, zh-HK, and zh-TW locale month parsing for October, November, and December. See #4194 by @puneetdixit200.

4.2.1

Fixed

• Fixed type definitions missing in v4.2.0 due to TypeScript misconfiguration.

4.2.0

This is a minor release in all senses, it only includes documentation updates (first of many) that points to the new You Don't Need date-fns* page.

* Not really

Changed

• Added Temporal API references to the JSDoc annotations of add, addBusinessDays, and addDays.

4.1.0

This release adds time zone support to format functions (that I somehow missed when working on the feature) and fixes a few bugs.

Make sure also upgrade TZDate to v1.0.2 as it includes a bunch of critical bug fixes.

Fixed

• Fixed internal constructFrom throwing an exception on null arguments. While null isn't allowed, the functions should rather return Invalid Date or NaN in such cases. See #3885.

Added

• Added missing time zone support to format, formatISO, formatISO9075, formatRelative and formatRFC3339. See #3886.

4.0.0

I have great news! First, ten years after its release, date-fns finally gets first-class time zone support.

Another great news is that there aren't many breaking changes in this release. All of them are type-related and will affect only those explicitly using internal date-fns types. Finally, it has been less than a year since the last major release, which is an improvement over the previous four years between v2 and v3. I plan on keeping the pace and minimizing breaking changes moving forward.

Read more about the release in the announcement blog post.

- Sasha @kossnocorp

Added

• Added time zones support via @date-fns/tz's TZDate class and tz helper function. See its README for the details about the API.

• All relevant functions now accept the context in option, which allows to specify the time zone to make the calculations in. If the function also returns a date, it will be in the specified time zone:

  import { addDays, startOfDay } from "date-fns";
  import { tz } from "@date-fns/tz";
  
  startOfDay(addDays(Date.now(), 5, { in: tz("Asia/Singapore") }));
  //=> "2024-09-16T00:00:00.000+08:00"
  

  In the example, addDays will get the current date and time in Singapore and add 5 days to it. startOfDay will inherit the date type and return the start of the day in Singapore.

Changed

• The function arguments, as well as Interval's start and end, now can be of different types, allowing you to mix UTCDate, TZDate, Date, and other extensions, as well as primitives (strings and numbers).

  The functions will normalize these values, make calculations, and return the result in the same type, preventing any bugs caused by the discrepancy. If passed, the type will be inferred from the context in option or the first encountered argument object type. The Interval's start and end will be considered separately, starting from start.

  In the given example, the result will be in the TZDate as the first argument is a number, and the start takes precedence over the end.

  clamp(Date.now(), {
    start: new TZDate(start, "Asia/Singapore"),
    end: new UTCDate(),
  });
  //=> TZDate
  

• BREAKING: This release contains a bunch of types changes that should not affect the library's expected usage. The changes are primarily internal and nuanced, so rather than listing them here, I recommend you run the type checker after the upgrade. If there are unfixable problems, please open an issue.

• BREAKING: The package is now ESM-first. CommonJS is still supported, and it should not affect most users, but it might break in certain environments. If you encounter any issues, please report them.

Fixed

• Fixed CDN build compatibility with jQuery and other tools that expose $ by properly wrapping the code in an IIFE.

3.6.0

On this release worked @kossnocorp and @world1dan. Also, thanks to @seated for sponsoring me.

Fixed

• Fixed weeks in the Belarisuan locale's formatDistance.

Added

• Added CDN versions of modules compatible with older browsers. See the CDN guide.

3.5.0

Kudos to @fturmel, @kossnocorp, @makstyle119, @tan75, @marcreichel, @tareknatsheh and @audunru for working on the release. Also, thanks to @seated for sponsoring me.

Fixed

• Fixed functions that use current date internally and made them work with date extensions like UTCDate.

• Fixed daysToWeeks returning negative 0.

• Fixed German grammar for the "half a minute" string.

Added

• Added the Northern Sámi (se) locale.

• Added the constructNow function that creates the current date using the passed reference date's constructor.

3.4.0

Kudos to @kossnocorp, @sakamossan, and @Revan99 for working on the release. Also, thanks to @seated for sponsoring me.

Added

• Added roundToNearestHours function.

• Added Central Kurdish (ckb) locale.

3.3.1

Kudos to @kossnocorp and @fturmel for working on the release.

Fixed

• Fixed DST issue in getOverlappingDaysInIntervals, resulting in an inconsistent number of days returned for intervals starting and ending in different DST periods.

• Fixed functions incorrectly using trunc instead of round. The bug was introduced in v3.3.0. The affected functions: differenceInCalendarDays, differenceInCalendarISOWeeks, differenceInCalendarWeeks, getISOWeek, getWeek, and getISOWeeksInYear.

3.3.0

On this release worked @kossnocorp, @TheKvikk, @fturmel and @ckcherry23.

Fixed

• Fixed the bug in getOverlappingDaysInIntervals caused by incorrect sorting of interval components that led to 0 for timestamps of different lengths.

• Fixed bugs when working with negative numbers caused by using Math.floor (-1.1 → -2) instead of Math.trunc (-1.1 → -1). Most of the conversion functions (i.e., hoursToMinutes) were affected when passing some negative fractional input. Also, some other functions that could be possibly affected by unfortunate timezone/date combinations were fixed.

  The functions that were affected: format, parse, getUnixTime, daysToWeeks, hoursToMilliseconds, hoursToMinutes, hoursToSeconds, milliseconds, minutesToMilliseconds, millisecondsToMinutes, monthsToYears, millisecondsToHours, millisecondsToSeconds, minutesToHours, minutesToSeconds, yearsToQuarters, yearsToMonths, yearsToDays, weeksToDays, secondsToMinutes, secondsToHours, quartersToYears, quartersToMonths and monthsToQuarters.

• Fixed the Czech locale's formatDistance to include 1 in formatDistance.

• Fixed differenceInSeconds and other functions relying on rounding options that can produce a negative 0.

• Added a preprocessor to the locales API, enabling fixing a long-standing bug in the French locale. (#1391)

• Added missing yearsToDays to the FP submodule.

• Made functions using rounding methods always return 0 instead of -0.

Added

• Added format alias formatDate with corresponding FormatDateOptions interface.

3.2.0

This release is brought to you by @kossnocorp, @fturmel, @grossbart, @MelvinVermeer, and @jcarstairs-scottlogic.

Fixed

• Fixed types compatibility with Lodash's flow and fp-ts's pipe. (#3641)

• Fixed inconsistent behavior of roundToNearestMinutes.

Added

• Added exports of format, lightFormat, and parse internals that enable 3rd-parties to consume those.

3.1.0

This release is brought to you by @kossnocorp, @makstyle119 and @dmgawel.

Fixed

• Fixed the plural form of weeks in Swedish.

Added

• Added yearsToDays function.

• Added a warning about using protected tokens like Y or D without passing a corresponding option. See #2950.

3.0.6

On this release worked @imwh0im, @jamcry and @tyrw.

Fixed

• Fixed bug in areIntervalsOverlapping caused by incorrect sorting (#3614)

3.0.5

This release is brought to you by @goku4199.

Fixed

• Fixed internal toDate not processing string arguments properly

3.0.4

This release is brought to you by @kossnocorp.

Fixed

• Fixed isWithinInterval bug caused by incorrectly sorting dates (#3623).

3.0.3

Fixed

• Rolled back pointing ESM types to the same d.ts files. Instead, now it copies the content to avoid the Masquerading as CJS problem reported by "Are the types wrong?".

3.0.2

Fixed

• Fixed yet another issue caused by ESM types by pointing to the same d.ts files.

• Added package.json to exports to provide access to tooling.

• Fixed TypeScript 5.4 build break by using the latest type names.

3.0.1

Fixed

• Fixed an error in certain environments caused by d.mts files exporting only types.

3.0.0

Changed

• BREAKING: date-fns is now a dual-package with the support of both ESM and CommonJS. The files exports are now explicitly in the package.json. The ESM files now have .mjs extension.

• BREAKING: The package now has a flat structure, meaning functions are now named node_modules/date-fns/add.mjs, locales are node_modules/date-fns/locale/enUS.mjs, etc.

• BREAKING: Now all file content’s exported via named exports instead of export default, which will require change direct imports i.e. const addDays = require(‘date-fns/addDays’) to const { addDays } = require(‘date-fns/addDays’).

• BREAKING: TypeScript types are now completely rewritten, check out the d.ts files for more information.

• BREAKING: constants now is not exported via the index, so to import one use import { daysInYear } from "date-fns/constants";. It improves compatibility with setups that modularize imports like Next.js.

• BREAKING: Functions now don’t check the number of passed arguments, delegating this task to type checkers. The functions are now slimmer because of this.

• BREAKING The arguments are not explicitly converted to the target types. Instead, they are passed as is, delegating this task to type checkers.

• BREAKING: Functions that accept Interval arguments now do not throw an error if the start is before the end and handle it as a negative interval. If one of the properties in an Invalid Date, these functions also do not throw and handle them as invalid intervals.

  • areIntervalsOverlapping normalize intervals before comparison, so { start: a, end: b } is practically equivalent to { start: b, end: a }. When comparing intervals with one of the properties being Invalid Date, the function will return false unless the others are valid and equal, given the inclusive option is passed. Otherwise, and when even one of the intervals has both properties invalid, the function will always return false.

  • getOverlappingDaysInIntervals now normalizes intervals before comparison, so { start: a, end: b } is practically equivalent to { start: b, end: a }. If any of the intervals’ properties is an Invalid Date, the function will always return 0.

  • isWithinInterval now normalizes intervals before comparison, so { start: a, end: b } is practically equivalent to { start: b, end: a }. If any of the intervals’ properties is an Invalid Date, the function will always return false.

  • intervalToDuration now returns negative durations for negative intervals. If one or both of the interval properties are invalid, the function will return an empty object.

  • The eachXOfInterval functions (eachDayOfInterval, eachHourOfInterval, eachMinuteOfInterval, eachMonthOfInterval, eachWeekendOfInterval, eachWeekendOfMonth, eachWeekendOfYear, eachWeekOfInterval, eachYearOfInterval) now return a reversed array if the passed interval’s start is after the end. Invalid properties will result in an empty array. Functions that accept the step option now also allow negative, 0, and NaN values and return reversed results if the step is negative and an empty array otherwise.

• BREAKING: intervalToDuration now skips 0 values in the resulting duration, resulting in more compact objects with only relevant properties.

• BREAKING: roundToNearestMinutes now returns Invalid Date instead of throwing an error when nearestTo option is less than 1 or more than 30.

• BREAKING: IE is no longer supported.

• BREAKING: Now all functions use Math.trunc rounding method where rounding is required. The behavior is configurable on a per-function basis.

• BREAKING: Undocumented onlyNumeric option was removed from nn and sv locales. If you relied on it, please contact me.

• BREAKING: Flow is not supported anymore. If you relied on it, please contact me.

• BREAKING: The locales now use regular functions instead of the UTC version, which should not break any code unless you used locales directly.

Added

• All functions that accept date arguments now also accept strings.

• All functions now export options interfaces.

• Now functions allow passing custom Date extensions like UTCDate. They will detect and use the arguments constructor to generate the result of the same class.

• eachMonthOfInterval, eachQuarterOfInterval, eachWeekOfInterval, and eachYearOfInterval now accept the step option like most of the eachXOfInterval functions.

• A new interval function that validates interval, emulating the v2 interval functions behavior.

• differenceInX functions now accept options and allow setting up roundingMethod that configures how the result is rounded. Math.trunc is the default method.

2.30.0

Kudos to @kossnocorp and @Andarist for working on the release.

Changes

• Fixed increased build size after enabling compatibility with older browsers in the previous release. This was done by adding @babel/runtime as a dependency. See more details.

2.29.3

This release is prepared by our own @leshakoss.

Fixed

• Fixed Ukrainian (uk) locale grammar for formatDistance.

• Improved browser compatibility by transforming the code with @babel/preset-env.

2.29.2

This release is brought to you by @nopears, @vadimpopa and @leshakoss.

Fixed

• Fixed sv locale abbreviated months matcher.

• Fixed uk locale abbreviated months matcher.

• Fixed a breaking change in intervalToDuration by removing a recently introduced RangeError.

2.29.1

Thanks to @fturmel for working on the release.

Fixed

• Fixed TypeScript and flow types for daysInYear constant.

2.29.0

On this release worked @tan75, @kossnocorp, @nopears, @Balastrong, @cpapazoglou, @dovca, @aliasgar55, @tomchentw, @JuanM04, @alexandresaura, @fturmel, @aezell, @andersravn, @TiagoPortfolio, @SukkaW, @Zebreus, @aviskarkc10, @maic66, @a-korzun, @Mejans, @davidspiess, @alexgul1, @matroskin062, @undecaf, @mprovenc, @jooola and @leshakoss.

Added

• Added intlFormatDistance function.

• Added setDefaultOptions and getDefaultOptions functions that allow you to set default default locale, weekStartsOn and firstWeekContainsDate.

• Added roundingMethod option to roundToNearestMinutes.

• Added Swiss Italian locale (it-CH).

• Added Occitan (oc) locale. (#2061)

• Added Belarusian Classic (be-tarask) locale.

Fixed

• Fixed Azerbaijani (az) locale for formatDistance.

• Fixed Czech (cs) locale for parse.

• Fixed TypeScript types for constants.

• Fixed long formatters in the South African English locale (en-ZA).

• Fixed a typo in the Icelandic locale (is) for format.

• Fixed weekday format for formatRelative in the Portuguese locale (pt).

• Fixed intervalToDuration being off by 1 day sometimes.

• Fixed ordinal number formatting in Italian locale (it).

• Fixed issue parsing months in Croatian (hr), Georgian (ka) and Serbian (sr and sr-Latn) locales.

Changed

• Replaced git.io links with full URLs in error messages.

• Internal: removed "v2.0.0 breaking changes" section from individual function docs

2.28.0

Kudos to @tan75, @fturmel, @arcanar7, @jeffjose, @helmut-lang, @zrev2220, @jooola, @minitesh, @cowboy-bebug, @mesqueeb, @JuanM04, @zhirzh, @damon02 and @leshakoss for working on the release.

Added

• Added West Frisian (fy) locale.

• Added Uzbek Cyrillic locale (uz-Cyrl).

Fixed

• add the missing accent mark for Saturday in Spanish locale (es) for format.

• allowed K token to be used with a or b in parse.

2.27.0

Kudos to @tan75, @hg-pyun, @07akioni, @razvanmitre, @Haqverdi, @pgcalixto, @janziemba, @fturmel, @JuanM04, @zhirzh, @seanghay, @bulutfatih, @nodeadtree, @cHaLkdusT, @a-korzun, @fishmandev, @wingclover, @Zacharias3690, @kossnocorp and @leshakoss for working on the release.

Fixed

• Fixed translation for quarters in format in Chinese Simplified locale (zh-CN).

• Fixed P token in format for Romanian locale (ro).

• Fixed era and month formatters in Azerbaijani locale (az).

• Fixed formatRelative patterns in Georgian locale (ka).

• Fixed regular expressions for parse in Estonian locale (er).

• Fixed the format of zeros in formatDuration in Czech locale (cs).

• Fixed ordinal formatting for years, weeks, hours, minutes and seconds in fr, fr-CA and fr-CH locales.

• Fixed constants not having proper TypeScript and Flow types.

• Fixed translation for Monday in Turkish locale (tr).

• Fixed eachMinuteOfInterval not handling intervals less than a minute correctly.

• Fixed flow types for closestTo and closestIndexTo.

Added

• Added Khmer locale (km).

2.26.0

Thanks to @kossnocorp, @leshakoss, @tan75, @gaplo, @AbdAllahAbdElFattah13, @fturmel, @kentaro84207, @V-Gutierrez, @atefBB, @jhonatanmacazana, @zhirzh, @Haqverdi, @mandaputtra, @micnic and @rikkalo for working on the release.

Fixed

• Fixed formatRelative format for lastWeek in Spanish locale.

• Fixed translation for October in Hindi locale.

• Fixed Azerbaijani locale to use correct era matchers for parse.

• Added the functions that use weekStartsOn and firstWeekContainsDate that were missing from the Locale documentation page.

Changed

• Changed abbreviation for August from "Ags" to "Agt" in Indonesian locale.

Added

• Added Irish English locale (en-IE).

• Added Arabic locale (ar). (#1670)

• Added Hong Kong Traditional Chinese locale (zh-HK). (#2684)

• Added Egyptian Arabic locale (ar-EG).

2.25.0

This release is brought to you by @kossnocorp, @gierschv, @fturmel, @redbmk, @mprovenc, @artyom-ivanov and @tan75.

Added

• Added Japanese Hiragana locale (ja-Hira).

• Added standalone months support to de and de-AT locales.

2.24.0

Kudos to Sasha Koss, Lucas Silva, Jan Ziemba, Anastasia Kobzar, Deepak Gupta, Jonas L, Kentaro Suzuki, Koussay Haj Kacem, fturmel, Tan75 and Adriaan Callaerts for working on the release.

Fixed

• Fixed an edge case in the Slovak locale caused by unescaped character. (#2083)

Changed

• Used 1 instead of ein for German formatDuration to make it consistent with other locales and formats. (#2505)

• Made Norwegian formatDuration consistent with other locales by using numeric representation instead of written. (#2469)

• Use the word "sekunda" instead of "vteřina" for second in the Czech locale.

• Made Flemish short date format corresponds to the Flemish government.

Added

• Added roundingMethod option to differenceInHours, differenceInMinutes, differenceInQuarters, differenceInSeconds and differenceInWeeks with trunc as the default method. (#2555)

• Added new functions: previousDay, previousMonday, previousTuesday, previousWednesday, previousThursday, previousFriday, previousSaturday and previousSunday.

2.23.0

Thanks to Liam Tait, fturmel, Takuya Uehara, Branislav Lazic, Seyyed Morteza Moosavi, Felipe Armoni, Sasha Koss, Michael Mok, Tan75 and Maxim Topciu for working on the release.

Changed

• Improved nextDay performance by roughly 50%.

• Added more ordinal formatting to the Japanese locale.

Added

• Added a new clamp function that allows to bound a date to an interval.

• Added Bosnian locale (bs).

• Allowed passing undefined in the duration to add and sub functions.

2.22.1

Thanks to Sasha Koss for working on the release.

Fixed

• Fixed constant typings. (#2491)

2.22.0

On this release worked Sasha Koss, Lucas Silva, Lay, jwbth, fturmel, Tan75 and Anastasia Kobzar.

Fixed

• Fixed Taiwanese locale to use traditional Chinese and removed unnecessary spaces.

• Fixed Russian locale to use correct long formats.

Added

• Added 18 new conversion functions:
  • daysToWeeks
  • hoursToMilliseconds
  • hoursToMinutes
  • hoursToSeconds
  • millisecondsToHours
  • millisecondsToMinutes
  • millisecondsToSeconds
  • minutesToHours
  • minutesToMilliseconds
  • minutesToSeconds
  • monthsToQuarters
  • monthsToYears
  • quartersToMonths
  • quartersToYears
  • secondsToHours
  • secondsToMilliseconds
  • secondsToMinutes
  • weeksToDays
  • yearsToMonths
  • yearsToQuarters

2.21.3

This release is brought to you by Maxim Topciu.

Fixed

• Fixed IE11 support by babelifing the shorthand properties.

2.21.2

Kudos to Aleksei Korzun, Maxim Topciu, Jonas L, Mohammad ali Ali panah and Tan75 for working on the release.

Fixed

• differenceInBusinessDays now returns NaN instead of Invalid Date when an invalid argument is passed to the function.

• Fixed weekStartsOn in Persian locale.

2.21.1

Thanks to Sasha Koss for working on the release.

Fixed

• Fixed a breaking change introduced by using modern default argument value syntax (see https://github.com/Hacker0x01/react-datepicker/issues/2870).

2.21.0

This release is brought to you by Aleksei Korzun, Tan75, Rubens Mariuzzo, Christoph Stenglein and Clément Tamisier.

Fixed

• Made formatDistanceStrict return 12 months instead of 1 year when unit: 'month'.

Added

• Added Haitian Creole (ht) locale.
• Added Austrian German (de-AT) locale.

2.20.3

Kudos to fturmel for working on the release.

Fixed

• Fixed broken tree-shaking caused by missing links to corresponding ESM. (#2207)

2.20.2

Kudos to Maxim Topciu for working on the release.

Fixed

• Fixed IE11 incompatibility caused by the usage of spread syntax. (#2408)

2.20.1

This release is brought to you by Sasha Koss and Tan75.

Fixed

• Fixed isDate Flow typings that we broke in v2.20.0.

2.20.0

This release is brought to you by Sasha Koss, Maxim Topciu, tu4mo, Tan75, Ardit Dine, Carl Rosell, Roman Mahotskyi, Mateusz Krzak, fgottschalk, Anastasia Kobzar, Bilguun Ochirbat, Lesha Koss, YuLe and guyroberts21.

Fixed

• Made formatDistanceStrict and formatDistanceToNowStrict always return 1 year instead of 12 months. (#2388)

• Fixed nextDay, nextMonday and nextTuesday missing in exports and type definitions. (#2325)

• Fixed a DST bug in formatDistanceStrict. (#2307)

Added

• Added new eachMinuteOfInterval function.

• Added Albanian (sq) locale

• Added Mongolian (mn) locale

• Added nextWednesday, nextThursday, nextFriday, nextSaturday and nextSunday.

2.19.0

On this release worked Tan75.

Fixed

• Assigned the correct firstWeekContainsDate value (4) for the French locale. (#2148)

• Fixed torsdag abbreviation in the Swedish locale.

• Fixed a bug in differenceInMonths and intervalToDuration that occurs when dealing with the 28th of February. (#2255)

Added

• Added new functions: nextDay, nextMonday and nextTuesday that allows getting the next day of the week, Monday or Tuesday respectively.

2.18.0

v2.18.0

Thanks to Tan75 and Lesha Koss.

Fixed

• Fixed documentation missing for intlFormat. (#2258)

• Fixed date formats in the Latvian locale. (#2202)

Added

• Added support of positive and negative offsets in parseJSON. (#2149)

2.17.0

Kudos to @shaykav, @davidgape89, @rikkalo, @tan75, @talgautb, @owenl131, @kylesezhi, @inigoiparragirre, @gius, @Endeauvirr and @frankyston.

Fixed

• Fixed Russian locale parsing issue.

• Fixed differenceInMonths for edge cases, such as the end of February dates.

• Fixed suffixes for the Kazakh locale.

• Fixed formatDuration week translation in pt and pt-BR locales.

• Made Japanese locale to use the correct value for the start of the week.

• Adjusted date formats in the Basque locale.

• Fixed the short and medium date formats in the Czech locale.

• Adjusted the Polish translations of formatDistance.

• Fixed the week's abbreviations in the Brazilian Portuguese.

Added

• Added intlFormat a lightweight formatting function that uses Intl API. Eventually, it will become the default formatting function, so it's highly recommended for new code.

• Added en-ZA locale.

• Added an ability to format lowercase am/pm with aaa and bbb tokens.

• Added ordinal formatting for Japanese year values.

2.16.1

Kudos to @aleksaps, @leedriscoll and @BanForFun for pull-requests!

Fixed

• Fixed a typo in Scottish Gaelic (gd) locale.
• Fixed typos in Serbian Latin locale.
• Fixed greek grammar for Saturday on formatRelative.
• Removed locale snapshots from the npm package making it lighter.

2.16.0

Kudos to @jvpelt, @piotrl, @yotamofek, @dwaxweiler, @leedriscoll and @bradevans for working on the release. Also thanks to @PascalHonegger, @pickfire, @TheJaredWilcurt, @SidKH and @nfantone for improving the documentation.

Fixed

• Added correct translations for Welsh 1 minute and 2 days.
• Fixed formatRFC3339 formatting timezone offset with minutes.
• Added missing locale type definition for formatDuration.
• Fixed Scottish Gaelic locale issues.

Changed

• Used shorter Hebrew alternative for "about".
• Improved string arguments warning after upgrading to v2.

Added

• Added Luxembourgish (lb) locale.

2.15.0

Thanks to @belgamo, @Matsuuu, @Imballinst, @arsnyder16, @pankajupadhyay29, @DCBN, @leedriscoll, @gottsohn, @mukuljainx and @dtriana for working on the release. Also kudos to @KidkArolis, @imgx64, @fjc0k, @wmonk, @djD-REK, @dandv, @psimk and @brimworks for improving the documentation.

Fixed

• Fixed behavior of addBusinessDays when input date is a weekend day.
• Fixed parseISO not returning Invalid Date on incorrect string when there are spaces in it.
• Fixed es round-tripping dates with Wednesday.
• Fixed round-trip bug with d/EEEE ordering in tokens like PPPPP.
• Fixed issues with parsing values in Japanese.
• Fixed Hungarian breaking IE11.
• Fixed Spanish accents in Saturday and Wednesday.

Changed

• Improved the message of protected tokens error.

Added

• Added Swiss-French fr-CH locale.
• Added Flemish nl-BE locale.
• Added Scottish Gaelic gd locale.
• Added New Zealand English en-NZ locale.
• Added isMatch function.

2.14.0

Kudos to @julamb, @JacobSoderblom, @justingrant, @dragunoff, @jmate0321, @gbhasha, @rasck, @AlbertoPdRF, @sebastianhaberey and @giogonzo for working on the release!

Fixed

• Fixed DST issues with add, addDays and addMonths.
• Fixed "quarter" translation in the Bulgarian locale.
• Fixed formatDistance strings in the Hungarian locale.
• Fixed Danish month abbreviations.
• Fixed parsing of mei in the Dutch locale.
• Fixed missing preposition in formatLong in the Spanish locale.
• Fixed formatRelative in the Italian locale.

Added

• Added eachQuarterOfInterval.
• Added Basque (eu) locale.
• Added Indian English (en-IN) locale.
• Added eachHourOfInterval.

2.13.0

Thanks to @JorenVos, @developergouli, @rhlowe and @justingrant for working on the release!

Fixed

• Fixed mei abbreviation in the Dutch locale.
• Fixed differenceInDays DST behavior broken in 2.12.0.

Added

• Added Kannada locale support.
• Added formatISODuration function.
• Added intervalToDuration function.

2.12.0

Kudos to @leshakoss, @skyuplam, @so99ynoodles, @dkozickis, @belgamo, @akgondber, @dcousens and @BoomDev for working on the release!

Fixed

• Fixed minulý štvrtok in Slovak locale.
• Fixed date ordinalNumber for ja/zh-CN/zh-TW and ko.
• Fixed quarters parsing.
• Fixed setDay with weekStartsOn != 0.
• Fixed differenceInDays across DST.
• Fixed required arguments exception message.

Added

• Added new function formatDistanceToNowStrict.

2.11.1

Fixed

• Rebuilt TypeScript and flow types.

2.11.0

Kudos to @oakhan3, @Mukhammadali, @altrim, @leepowellcouk, @amatzon, @bryanMt, @kalekseev, @eugene-platov and @tjrobinson for working on the release.

Fixed

• Fixed a bug in differenceInYears causing incorrect results when the left date is a leap day.
• Fixed parseISO to work correctly around time shift dates.
• Fixed format to work correctly with GMT-0752/GMT-0456 and similar timezones.

Changed

• Changed getDay typings to return 0|1|2|3|4|5|6 instead of number.
• Improved Chinese locale:
  • Change date format to meet the national standard (GB/T 7408-2005).
  • Improve ordinalNumber function behavior.
  • Add prefix in formatRelative depending on if it's a current week or not.

Added

• Added Uzbek uz locale.
• Updated Macedonian locale for v2.
• Added Maltese mt locale.

2.10.0

Fixed

• Fixed formatISO when formatting time with timezones with minute offsets > 0. Kudos to @dcRUSTy.

Added

• Added weeks to Duration.
• Added weeks support to add and sub.

2.9.0

Thanks to @mborgbrant, @saintplay, @mrenty, @kibertoad, @levibuzolic, @Anshuman71, @talgautb, @filipjuza, @tobyzerner, @emil9453, @fintara, @pascaliske, @rramiachraf, @marnusw and @Imballinst for working on the release.

Fixed

• Fixed a bug with addBusinessDays returning the Tuesday when adding 1 day on weekends. Now it returns the Monday.
• Added missing timezone to formatISO.
• Removed dots from short day period names in the Kazakh locale.
• Fixed typo in formatDistance in the Czech locale.
• Fixed shortenings in the Bulgarian locale.
• Fixed regex for the May in the Portuguese locale.

Added

• Added eachMonthOfInterval and eachYearOfInterval.
• Added inclusive option to `areIntervalsOverlapping.
• Added isExists function that checks if the given date is exists.
• Added add function to add seconds, minutes, hours, weeks, years in single call.
• Added sub function, the opposite of add.
• Added Duration type used in add and sub.
• Added Azerbaijani (az) locale.
• Added Moroccan Arabic (ar-MA) locale.

Changed

• Reduced the total minified build size by 1Kb/4%.
• Made all properties in Locale type optional.
• Added missing properties to Locale type.
• Add the locale code to Locale type.
• Added support of space time separator to parseJSON.
• Allowed up to 7 digits in milliseconds in parseJSON.

2.8.1

Thanks to @Imballinst for the bug fix!

Fixed

• Add colon between the hour and minutes for formatRFC3339. See #1548.

2.8.0

Kudos to @NaridaL, @Zyten, @Imballinst, @leshakoss and @Neorth for working on the release.

Fixed

• Remove the next week preposition in the Swedish locale.

Added

• Added Malay (ms) locale.
• Added formatISO, formatISO9075, formatRFC3339, and formatRFC7231 functions.

2.7.0

Thanks to @mzgajner, @NaridaL, @Zyten, @leshakoss, @fintara and @kpr-hellofresh for contributing to the release.

Fixed

• Fixed a mistake in the Slovenian locale.
• Fixed incorrect behavior of parseISO in Firefox caused by differences in getTimezoneOffset.

Changed

• Make object argument types more elaborate in Flow type definitions.
• Get rid of deprecated Function in Flow type definitions.
• Allow parseJSON to accept strings without trailing 'Z' symbol and with up to 6 digits in the milliseconds' field.

Added

• Added Bulgarian (bg) locale.

2.6.0

Kudos to @marnusw, @cdrikd and @rogyvoje for working on the release!

Added

• Added parseJSON - lightweight function (just 411 B) that parses dates formatted with toJSON.
• Added the language code to each locale.
• Added subBusinessDays function.
• Added both Serbian - cyrillic (sr) and latin (sr-Latn) locales.

2.5.1

Thanks to @mitchellbutler for the bug fix!

Fixed

• Fixed infinite loop in addBusinessDays.

2.5.0

Kudos to @dkozickis, @drugoi, @kranthilakum, @102, @gpetrioli and @JulienMalige for making the release happen.

Fixed

• Fixed compatibility with IE11 by removing findIndex from the code.
• Fixed Greek locale patterns.

Added

• Added Kazakh (kk) locale.
• Added Telugu (te) locale.
• Added Canadian French (fr-CA) locale.
• Added Australian English (en-AU) locale.
• Exported Interval and Locale types from Flow typings.

2.4.1

Thanks to @mrclayman for reporting the issue and @leshakoss for fixing it.

Fixed

• Fixed am/pm mixup in the Czech locale.

2.4.0

This release brought to you by these amazing people: @lovelovedokidoki, @alexigityan, @kalekseev and @andybangs. You rock!

Fixed

• Fixed Vietnamese parsing patterns.
• Fixed Czech parsing regexes.
• Fixed offset for Eastern Hemisphere in parseISO.

Added

• Added Armenian locale support.

2.3.0

Huge thanks to @lovelovedokidoki who improved 8 (!) locales in an unstoppable open-source rampage and @VesterDe for fixing Slovenian locale 👏

Fixed

• Fixed the translation of "yesterday" in the Slovenian locale.
• Fixed French parsing issues with June and August.
• Improved Turkish parsing.
• Fixed "March" in Dutch parsing patterns.
• Fixed Hindi parsing patterns.

Added

• Added Finnish matching patterns.
• Accept abbreviated March, June, July in Norwegian locales.
• Added parsing for Greek months with long formatting.

2.2.1

Kudos to date-fns contributors: @mzgajner, @sibiraj-s, @mukeshmandiwal, @SneakyFish5 and @CarterLi.

Added

• Added new set function.

• Updated Slovenian (sl) locale for v2.

• Added Tamil (ta) locale.

• Added Hindi (hi) locale.

• Added support of \n in format, lightFormat and parse.

2.1.0

Thanks to date-fns contributors: @ManadayM, @illuminist, @visualfanatic, @vsaarinen and at least but not least @leshakoss!

Fixed

• Set start of the week to the Sunday for Thai locale.
• Fixed month matching in Polish locale.
• Fixed eachWeekendOfInterval skipping the first date in the supplied interval.

Added

• Added Gujarati locale.

2.0.1

See the changelog: https://github.com/date-fns/date-fns/blob/master/CHANGELOG.md#201---2019-08-23

2.0.0

🔥🔥🔥 date-fns v2 is out! 🔥🔥🔥

See the changelogs:

• Pre-releases changelog (if you're upgrading from alpha or beta): https://gist.github.com/kossnocorp/a307a464760b405bb78ef5020a4ab136#v200
• Full changelog: https://github.com/date-fns/date-fns/blob/master/CHANGELOG.md#200---2019-08-20