Software Localisation - Quick Reference

Production patterns for internationalisation (i18n) and localisation (l10n) in modern web applications. Covers library selection, translation management, ICU message format, RTL support, and CI/CD workflows.

Snapshot (2026-02): i18next 25.x, react-i18next 16.x, react-intl 8.x, vue-i18n 11.x, next-intl 4.x, @angular/localize 21.x. Always verify current versions in the target repo (see Currency Check Protocol).

Authoritative References: