# What changed in @sumup-oss/intl

> 4 changes in @sumup-oss/intl 3 from its official release notes, upgrade guides and advisories: 1 deprecations. Each one cited. Sources checked 2026-10-25. HTML: https://unstale.sh/npm/@sumup-oss/intl/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @sumup-oss/intl 3

### Deprecations

- Implicit locale resolution across all formatters is deprecated; omitting locales now triggers a development-time warning, and the argument will be required in the next major version. (3.5.0) — [release notes](https://github.com/sumup-oss/intl-js/releases/tag/v3.5.0)

### Fixes and other changes

- Fixed the check for production mode. (3.5.1) — [release notes](https://github.com/sumup-oss/intl-js/releases/tag/v3.5.1)
- Support for temporal-polyfill@1.x is declared in the peer dependency range. (3.5.0) — [release notes](https://github.com/sumup-oss/intl-js/releases/tag/v3.5.0)
- Colombian pesos (COP) and Hungarian forint (HUF) use 2 fraction digits consistently across systems, following ISO 4217. (3.4.0) — [release notes](https://github.com/sumup-oss/intl-js/releases/tag/v3.4.0)