Javascript Programming Tutorials, Guides & Best Practices

• Dynamically switch between translated URLs
• Support SEO-friendly, localized routing
• Scale to additional languages easily

• Add 404 fallbacks for non-matching paths
• Integrate i18next-http-backend to load translations from a CMS
• Use language subdomains (e.g., fr.site.com) for region-specific experiences

• Ensure localized content fits small screens
• Test RTL support on all breakpoints
• Use dynamic font scaling for languages like Arabic or Hindi
• Translate push notifications and in-app messages

In 2025, certain laws enforce localized data:

import ICU from 'i18next-icu';

i18n
  .use(ICU) // Enables datetime and currency formatting
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
    ...
    interpolation: {
      format: (value, format, lng) => {
        if (format === 'datetime') {
          return new Intl.DateTimeFormat(lng).format(value);
        }
        if (format === 'currency') {
          return new Intl.NumberFormat(lng, {
            style: 'currency',
            currency: lng === 'fr' ? 'EUR' : 'USD',
          }).format(value);
        }
        return value;
      },
    }
  });

In large apps, structure your translation files modularly:

Module Federation is a feature in Webpack 5 that enables one JavaScript application (host) to dynamically load code from another (remote) at runtime.

• Load remote components/apps on demand
• Share dependencies to avoid duplication
• Enable code splitting across teams
• Works with different JS frameworks

• Simplicity: Create stores using a straightforward API without the need for reducers or action types.
• Performance: Optimized for performance with selective rendering and minimal re-renders.
• Flexibility: Supports custom hooks, middleware, and integration with other libraries.
• No Providers: Unlike Redux, Zustand doesn't require wrapping your app with context providers.

These features make Zustand an attractive choice for developers looking to manage state in a more concise and efficient manner.