The following config will allow any language to be included in the url, not only the ones in the availableLanguages array.
/// "@studiohyperdrive/ngx-i18n": "18.0.0"
NgxI18nModule.forRoot(
{
defaultLanguage: 'nl',
availableLanguages: ['nl', 'fr', 'en'],
defaultAssetPaths: ['./assets/i18n/shared/i18n/']
},
MyTranslationLoader
)