app.sandbox.ts

private setupLanguage(): void {
  // Load localization object from the confguration
  let localization: any = this.configService.get('localization');

  // Save language codes as an array
  let languages: Array<string> = localization.languages.map(lang => lang.code);

  // Get browser’s default language
  let browserLang: string = this.translate.getBrowserLang();

  // Tell the translate service for the available languages and set a
  // default one
  this.translate.addLangs(languages);
  this.translate.setDefaultLang(localization.defaultLanguage);

  // The default language will be a default language from the configuration
  // or selected browser language if it matches one of our predefined values
  let browserMatch = browserLang.match(/en|hr/);

  let selectedLang = browserMatch ? browserLang : localization.defaultLanguage;
  let selectedCulture = localization.languages.filter(lang => {
    return lang.code === selectedLang;
  })[0].culture;

  // Tell the translate service to use selected language
  this.translate.use(selectedLang);

  // Save selected language and culture in the store
  this.appState$.dispatch(new settingsActions.SetLanguageAction(selectedLang));
  this.appState$.dispatch(new settingsActions.SetCultureAction(selectedCulture));
  }