npm · #2181 most downloaded on npm

intl-messageformat

12.1.382M downloads/moformatjs/formatjs ↗New releases in your daily digest, changelog included.

Formats ICU Message strings with number, date, plural, and select placeholders to create localized messages.

Last release 2 days ago
05 Oct 2026
Ships on a steady schedule
a new release about every 3 weeks
Most releases are documented
notes for 49 of the last 60 stable releases
3 versions withdrawn
withdrawn after publishing
13 years old
318 releases · first in 2014

Release timeline

318 releases since 2014

2014201620182020

Releases

12.1.35 Oct 20262 sources agree
@formatjs/icu-messageformat-parser: tolerate MicrosoftAjax startsWith override
12.1.3 (2026-10-05)

Bug Fixes

@formatjs/icu-messageformat-parser: tolerate MicrosoftAjax startsWith override (#7549) (6b3869a)

Dependencies

The following workspace dependencies were updated

dependencies

@formatjs/icu-messageformat-parser bumped to 3.5.21
Open source →
12.1.219 Sept 20262 sources agree
The following workspace dependencies were updated
12.1.2 (2026-09-19)

Dependencies

The following workspace dependencies were updated

dependencies

@formatjs/icu-messageformat-parser bumped to 3.5.20

@formatjs/intl bumped to 6.1.2

intl-messageformat bumped to 12.1.2

From the same repository

formatjs/formatjs

One column per quarter.

12.1.118 Sept 20262 sources agree

eslint-plugin-formatjs: generate lint-compatible empty message contracts

12.1.1 (2026-09-18)

Bug Fixes

eslint-plugin-formatjs: generate lint-compatible empty message contracts (#7442) (799efaf)

Open source →

Additional notes

12.1.1 (2026-09-18)

Bug Fixes

eslint-plugin-formatjs: generate lint-compatible empty message contracts (#7442) (799efaf)

Dependencies

The following workspace dependencies were updated
- dependencies
  - @formatjs/intl bumped to 6.1.1
  - intl-messageformat bumped to 12.1.1

Open source →

12.1.016 Sept 20262 sources agree

@formatjs/intl: support opt-in branded message text

12.1.0 (2026-09-16)

Features

@formatjs/intl: support opt-in branded message text (#7436) (152ee1c)

Dependencies

The following workspace dependencies were updated
- dependencies
  - @formatjs/intl bumped to 6.1.0
  - intl-messageformat bumped to 12.1.0

Open source →

12.0.015 Sept 2026

@formatjs/intl: simplify typed helper calls and generated contracts

12.0.0 (2026-09-15)

⚠ BREAKING CHANGES

@formatjs/intl: simplify typed helper calls and generated contracts (#7420)

Features

@formatjs/intl: export shared text message formatter type (#7418) (e4d9e50)
@formatjs/intl: simplify typed helper calls and generated contracts (#7420) (0710507)

Dependencies

The following workspace dependencies were updated
- dependencies
  - @formatjs/intl bumped to 6.0.0

Open source →

Additional notes

Dependencies

The following workspace dependencies were updated
- dependencies
  - @formatjs/icu-messageformat-parser bumped to 3.5.19

Open source →

12.0.0-rc.013 Sept 2026pre-release2 sources agree

intl-messageformat: intl-messageformat, @formatjs/intl, and react-intl now require TypeScript 5.4 or newer, including projects that do not enable type

12.0.0-rc.0 (2026-09-13)

⚠ BREAKING CHANGES

intl-messageformat: intl-messageformat, @formatjs/intl, and react-intl now require TypeScript 5.4 or newer, including projects that do not enable typed messages.

Features

eslint-plugin-formatjs: align placeholder checks and simplify generated types (#7374) (f655fae)
intl-messageformat: require TS 5.4 and add typed ICU contracts (#7370) (e8620f8)

Open source →

11.2.1512 Sept 20262 sources agree

The following workspace dependencies were updated

11.2.15 (2026-09-12)

Dependencies

The following workspace dependencies were updated
- dependencies
  - @formatjs/icu-messageformat-parser bumped to 3.5.18

Open source →

11.2.1417 Aug 2026

Nothing published for this version

11.2.1331 Jul 2026

Nothing published for this version

11.2.1216 Jul 2026

Nothing published for this version

11.2.1111 Jul 2026

Nothing published for this version

11.2.109 Jul 2026

Nothing published for this version

11.2.926 Jun 2026

Nothing published for this version

11.2.84 Jun 2026

Nothing published for this version

11.2.722 May 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.615 May 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.512 May 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.45 May 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.329 Apr 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.224 Apr 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.2.113 Apr 2026

deps: fix broken GitHub URLs in changelogs (#6252) (f6f693f), closes #6248 - by @longlho

Bug Fixes

deps: fix broken GitHub URLs in changelogs (#6252) (f6f693f), closes #6248 - by @longlho

Reverts

deps: revert gazelle migration phases 1-3 (#6205) (4c04aa2), closes #6197 #6198 #6199 #6195 #6196 - by @longlho

11.2.0 (2026-03-17)

Features

@formatjs/ecma402-abstract: migrate from decimal.js to @formatjs/bigdecimal (#6148) (93744d4) - by @longlho

Open source →

11.2.019 Mar 2026

Nothing published for this version

11.1.316 Mar 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.1.21 Feb 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.1.119 Jan 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

11.1.0 (2026-01-15)

Features

@formatjs/intl-segmenter: improve Unicode 17.0 Format/Extend transparency and upgrade deps (#5862) (effeb9c), closes #29 - by @longlho

Open source →

11.1.015 Jan 2026

Nothing published for this version

11.0.96 Jan 2026

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.82 Jan 2026

intl-messageformat: fix value having special key like constructor, fix ##4490 (#5751) (83d24fe) - by @longlho

Bug Fixes

intl-messageformat: fix value having special key like constructor, fix ##4490 (#5751) (83d24fe) - by @longlho
intl-messageformat: handle bigint, fix #5081 (#5743) (aa40318) - by @longlho

Open source →

11.0.726 Dec 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.623 Dec 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.523 Dec 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.419 Dec 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.217 Dec 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

11.0.115 Dec 2025

react-intl: align $t with formatMessage overloads

11.0.1 (2026-09-15)

Bug Fixes

react-intl: align $t with formatMessage overloads (#7416) (8554d5e)

Open source →

Additional notes

Note: Version bump only for package intl-messageformat

Open source →

11.0.015 Dec 2025

intl-messageformat: convert to esm

⚠ BREAKING CHANGES

intl-messageformat: convert to esm (#5456)
@formatjs/intl-pluralrules: convert to esm (#5436)

Features

@formatjs/intl-pluralrules: convert to esm (#5436) (0ed2ff9) - by @longlho
intl-messageformat: convert to esm (#5456) (e6459ea) - by @longlho

Open source →

10.7.189 Oct 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.173 Oct 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.1623 Mar 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.159 Feb 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.1420 Jan 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.1320 Jan 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.1217 Jan 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.112 Jan 2025

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.109 Dec 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.99 Dec 2024

turn on isolatedDeclarations and specify explicit types everywhere (4d855c2) - by @longlho

Bug Fixes

turn on isolatedDeclarations and specify explicit types everywhere (4d855c2) - by @longlho

Open source →

10.7.88 Dec 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.718 Nov 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.65 Nov 2024

react-intl: fix type inference and overload for formatMessage, fix #4538 (5073395) - by @longlho

Bug Fixes

react-intl: fix type inference and overload for formatMessage, fix #4538 (5073395) - by @longlho

Open source →

10.7.54 Nov 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.42 Nov 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.325 Oct 2024

relax tslib req to 2 instead of 2.7 (930c3e8) - by @longlho

Bug Fixes

relax tslib req to 2 instead of 2.7 (930c3e8) - by @longlho

Open source →

10.7.225 Oct 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.7.121 Oct 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

10.7.0 (2024-10-12)

Features

intl-messageformat: use memoized constructor creation for perf (12f94f7) - by @longlho

10.6.0 (2024-10-09)

Features

intl-messageformat: use memoized constructor creation for perf (12f94f7) - by @longlho

Open source →

10.7.012 Oct 2024

Nothing published for this version

10.6.09 Oct 2024

Nothing published for this version

10.5.1419 May 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.5.1318 May 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.5.125 May 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.5.1126 Jan 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

10.5.1016 Jan 2024

Note: Version bump only for package intl-messageformat

Note: Version bump only for package intl-messageformat

Open source →

Your coding agent can read these notes before it upgrades. Set up the MCP server →

Internationalize JS apps. This library provides an API to format dates, numbers, and strings, including pluralization and handling translations.

intl-messageformat

Release timeline

Releases

12.1.3 (2026-10-05)

Bug Fixes

Dependencies

12.1.2 (2026-09-19)

Dependencies

From the same repository

12.1.1 (2026-09-18)

Bug Fixes

12.1.1 (2026-09-18)

Bug Fixes

Dependencies

12.1.0 (2026-09-16)

Features

Dependencies

12.0.0 (2026-09-15)

⚠ BREAKING CHANGES

Features

Dependencies

Dependencies

12.0.0-rc.0 (2026-09-13)

⚠ BREAKING CHANGES

Features

11.2.15 (2026-09-12)

Dependencies

Bug Fixes

Reverts

11.2.0 (2026-03-17)

Features

11.1.0 (2026-01-15)

Features

Bug Fixes

11.0.1 (2026-09-15)

Bug Fixes

⚠ BREAKING CHANGES

Features

Bug Fixes

Bug Fixes

Bug Fixes

10.7.0 (2024-10-12)

Features

10.6.0 (2024-10-09)

Features