Function getLanguage

getLanguage(locale?: unknown, fallback?: string): string
Extracts the primary language subtag (e.g., 'en', 'fr') from a locale or list of locales. Defaults to 'en' if not determinable.
Parameters
- Optionallocale: unknown
  Locale identifier or list of locales
- fallback: string = 'en'
  Fallback language subtag (default: 'en')
Returns string
The lowercase language subtag
Example
```
getLanguage('en-US'); // 'en'
getLanguage(['fr-CA', 'en-US']); // 'fr'
getLanguage(); // 'en'
```
- Defined in packages/library/src/common/runtime/international.library.ts:419