Dynamic Imports (import())

What pattern is demonstrated in this internationalization example?

// Using dynamic imports for internationalization
const language = getUserLanguage();
let messages;

try {
  // First try user's exact language
  messages = await import(`./locales/${language}.js`);
} catch (e) {
  try {
    // Fall back to base language
    const baseLanguage = language.split('-')[0];
    messages = await import(`./locales/${baseLanguage}.js`);
  } catch (e) {
    // Ultimate fallback
    messages = await import('./locales/en.js');
  }
}

displayUI(messages);

Recursive module loading
Progressive loading
Fallback chain loading
This code demonstrates fallback chain loading with dynamic imports: 1) It attempts to load the user's exact language preference first, 2) If that fails, it falls back to the base language without regional specifics, 3) If that also fails, it falls back to a guaranteed default (English), 4) This creates a resilient loading strategy that handles missing translations gracefully, 5) The approach maximizes the specificity of translations while ensuring something always loads, 6) Error handling with try/catch blocks makes the fallback chain explicit and reliable, 7) This pattern is particularly useful for internationalization where resource availability varies, 8) It represents a practical application of dynamic imports for content that varies by user context.
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