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maternal-app/maternal-web/locales/en/common.json
Andrei c1e37d30b0
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feat: Implement frontend localization with i18n and measurement units
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>
2025-10-03 10:52:38 +00:00

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JSON

{
"appName": "Maternal",
"appDescription": "AI-Powered Child Care Assistant",
"welcome": "Welcome",
"loading": "Loading...",
"save": "Save",
"cancel": "Cancel",
"delete": "Delete",
"edit": "Edit",
"add": "Add",
"close": "Close",
"confirm": "Confirm",
"back": "Back",
"next": "Next",
"previous": "Previous",
"finish": "Finish",
"search": "Search",
"filter": "Filter",
"sort": "Sort",
"refresh": "Refresh",
"retry": "Retry",
"continue": "Continue",
"submit": "Submit",
"reset": "Reset",
"clear": "Clear",
"yes": "Yes",
"no": "No",
"ok": "OK",
"error": "Error",
"success": "Success",
"warning": "Warning",
"info": "Information",
"home": "Home",
"settings": "Settings",
"profile": "Profile",
"logout": "Logout",
"login": "Login",
"signup": "Sign Up",
"email": "Email",
"password": "Password",
"name": "Name",
"date": "Date",
"time": "Time",
"duration": "Duration",
"notes": "Notes",
"optional": "Optional",
"required": "Required",
"units": {
"metric": "Metric",
"imperial": "Imperial"
},
"measurements": {
"weight": "Weight",
"height": "Height",
"temperature": "Temperature",
"volume": "Volume"
},
"navigation": {
"home": "Home",
"tracking": "Tracking",
"ai": "AI Assistant",
"family": "Family",
"insights": "Insights",
"settings": "Settings"
}
}