How to use the angular-l10n.ProviderType.Static function in angular-l10n

import { Languages } from './languages';
import { ServerTagsService } from './servers/server-tags.service';

const localePrefix = (environment.web) ? 'https://servers.fivem.net/' : './';

const l10nConfig: L10nConfig = {
	locale: {
		languages: Languages.toList(),
		language: 'en'
	},
	translation: {
		//providers: [] // see AppModule constructor
					  // broke on Angular 8, here again
		providers: [
			{ type: ProviderType.Fallback, prefix: localePrefix + 'assets/languages/locale-en', fallbackLanguage: [] },
			{ type: ProviderType.Static, prefix: localePrefix + 'assets/languages/locale-' }
		]
	}
};

export function localStorageFactory() {
	return (typeof window !== 'undefined') ? window.localStorage : null;
}

export function metaFactory(): MetaLoader {
	return new MetaStaticLoader({
		pageTitlePositioning: PageTitlePositioning.PrependPageTitle,
		pageTitleSeparator: ' / ',
		applicationName: 'FiveM server list'
	});
}

import { AuthorizationCanGuard } from './authorization.can.guard';

const l10nConfig: L10nConfig = {
    locale: {
        languages: [
            { code: 'en', dir: 'ltr' },
            { code: 'it', dir: 'ltr' },
            { code: 'fr', dir: 'ltr' },
            { code: 'de', dir: 'ltr' }
        ],
        language: 'en',
        storage: StorageStrategy.Cookie
    },
    translation: {
        providers: [
            { type: ProviderType.Static, prefix: './i18n/locale-' }
        ],
        caching: true,
        missingValue: 'No key'
    }
};

export function loadConfig(oidcConfigService: OidcConfigService) {
    console.log('APP_INITIALIZER STARTING');
    return () => oidcConfigService.load(`${window.location.origin}/api/ClientAppSettings`);
}

@NgModule({
    imports: [
        BrowserModule,
        FormsModule,
        routing,

import { OidcConfigService } from './auth/services/oidc.security.config.service';

const l10nConfig: L10nConfig = {
    locale: {
        languages: [
            { code: 'en', dir: 'ltr' },
            { code: 'it', dir: 'ltr' },
            { code: 'fr', dir: 'ltr' },
            { code: 'de', dir: 'ltr' }
        ],
        language: 'en',
        storage: StorageStrategy.Cookie
    },
    translation: {
        providers: [
            { type: ProviderType.Static, prefix: './i18n/locale-' }
        ],
        caching: true,
        missingValue: 'No key'
    }
};

export function loadConfig(oidcConfigService: OidcConfigService) {
    console.log('APP_INITIALIZER STARTING');
    return () => oidcConfigService.load(`${window.location.origin}/api/ClientAppSettings`);
}

@NgModule({
    imports: [
        BrowserModule,
        FormsModule,
        routing,

}

const l10nConfig: L10nConfig = {
    locale: {
        languages: [
            { code: 'en', dir: 'ltr' },
            { code: 'it', dir: 'ltr' },
            { code: 'fr', dir: 'ltr' },
            { code: 'de', dir: 'ltr' }
        ],
        language: 'en',
        storage: StorageStrategy.Cookie
    },
    translation: {
        providers: [
            { type: ProviderType.Static, prefix: './i18n/locale-' }
        ],
        caching: true,
        missingValue: 'No key'
    }
};

@NgModule({
    imports: [
        BrowserModule,
        FormsModule,
        routing,
        HttpClientModule,
        TranslationModule.forRoot(l10nConfig),
        DataEventRecordsModule,
        AuthModule.forRoot(),
    ],

const l10nConfig: L10nConfig = {
    logger: {
        level: LogLevel.Warn
    },
    locale: {
        languages: [
            { code: 'en', dir: 'ltr' },
            { code: 'it', dir: 'ltr' }
        ],
        language: 'en',
        storage: StorageStrategy.Cookie
    },
    translation: {
        providers: [
            { type: ProviderType.Static, prefix: './assets/locale-' }
        ],
        caching: true,
        composedKeySeparator: '.',
        missingValue: 'No key',
    }
};

@NgModule({
  declarations: [
    AppComponent,
    PageNotFoundComponent,
    SpinnerComponent,
    ServerApiComponent,
    MapActivityComponent,
    NewsComponent,
    ChatComponent,