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Explain Internationalization (i18n) in Angular.

Senior Angular
Quick Answer Angular i18n: mark text with i18n attribute, extract with ng extract-i18n to XLIFF files, translate files per locale, build separate bundles per locale (ng build --localize). Formatted separately per locale means no runtime translation overhead. For runtime translation (without separate builds), ngx-translate library is the alternative. Angular 14+ improved Ivy-based i18n support.

Answer

Angular supports:

  • Build-time localization
  • Static translations via Angular i18n
  • Runtime translations via ngx-translate
  • Locale-specific formatting for dates, currency, numbers

i18n is essential for global and multilingual applications.

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