Implemented comprehensive frontend localization infrastructure supporting 5 languages (English, Spanish, French, Portuguese, Chinese) with measurement unit preferences (Metric/Imperial). This lays the foundation for international user support. **Core Infrastructure:** - Installed i18next, react-i18next, i18next-browser-languagedetector - Created I18nProvider component integrated into app layout - Configured i18next with language detection and localStorage persistence - Created 35 translation files (5 languages × 7 namespaces) **Translation Namespaces:** - common: App-wide UI elements, navigation, actions - tracking: Activity tracking (feeding, sleep, diaper, milestones) - ai: AI assistant chat interface - auth: Authentication flows (login, signup, password reset) - settings: Settings and preferences - onboarding: Onboarding flow - errors: Error messages and validation **Custom Hooks:** - useTranslation: Type-safe translation wrapper - useLocale: Language and measurement system management - useFormatting: Date, time, number, and unit formatting **Measurement Unit Support:** - Created unit conversion utilities (weight, height, temperature, volume) - Metric: kg, cm, °C, ml - Imperial: lb, in, °F, oz - Bidirectional conversion functions **UI Components:** - LanguageSelector: Dropdown to change app language - MeasurementUnitSelector: Toggle between Metric/Imperial - Integrated both into Settings page Preferences section **Next Steps (Remaining):** - Add measurement preferences to backend user schema - Create onboarding flow with language/measurement selection - Apply translations to existing components (dashboard, tracking forms) - Implement multi-language AI responses - Add professional translations (currently using basic translations) **File Highlights:** - lib/i18n/config.ts: i18next configuration - hooks/useFormatting.ts: Formatting utilities with locale support - lib/utils/unitConversion.ts: Unit conversion logic - components/settings/*Selector.tsx: Language and measurement selectors - locales/*/: Translation files for 5 languages 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This is a Next.js project bootstrapped with create-next-app.
Getting Started
First, run the development server:
npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev
Open http://localhost:3000 with your browser to see the result.
You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.
This project uses next/font to automatically optimize and load Inter, a custom Google Font.
Learn More
To learn more about Next.js, take a look at the following resources:
- Next.js Documentation - learn about Next.js features and API.
- Learn Next.js - an interactive Next.js tutorial.
You can check out the Next.js GitHub repository - your feedback and contributions are welcome!
Deploy on Vercel
The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.
Check out our Next.js deployment documentation for more details.