localize

Write localized Elixir applications with the Localize library (hex package "localize") — formatting numbers, currencies, dates, times, durations, units of measure, lists, collation/sorting, and MessageFormat 2 messages. Use this skill whenever an Elixir app renders numbers, money, dates, times, quantities, or sorted text for people to read — even if the app targets a single locale — and for any task mentioning localize, ex_cldr migration, CLDR, locale validation, language tags, plural rules, or translatable message strings. Also use it when reviewing Elixir code that formats values by hand (interpolation, Calendar.strftime, :io_lib.format, Enum.sort on user-visible strings) since Localize is usually the better replacement.