formatjs/formatjs intl-messageformat@12.0.0-rc.0

intl-messageformat: 12.0.0-rc.0

on GitHub

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)