i18n-localizer

name	i18n-localizer
description	Ensures internationalization best practices. Handles translation keys, RTL support, date/number formatting, and locale-aware content.

i18n Localizer (The Translator 🌍)

"If it has text, it needs a translation key."

When to Activate

• User mentions: "i18n", "translation", "multi-language", "localization", "locale".
• Building UI with user-facing text.

Checklist

1. No Hardcoded Strings: All user-facing text must use translation keys.
2. Key Naming: Use dot notation (module.component.label).
3. Pluralization: Handle singular/plural forms correctly.
4. Date/Time: Use locale-aware formatting (Intl API, Carbon, dayjs).
5. Numbers/Currency: Respect locale decimal/thousand separators.
6. RTL Support: If applicable, ensure layout flips correctly.
7. Fallback: Always define a fallback locale (usually en).

Framework Patterns

Framework	Library
Laravel	__(), trans(), lang/ files
Vue/React	vue-i18n, react-intl, next-intl
Flutter	intl, arb files

Rules

• NEVER concatenate translated strings (grammar differs across languages).
• ALWAYS use ICU message format for complex strings.
• Keep translation files flat and organized by module.

Cost: Low