app_init_take_two.ts

export function main() {
  let userRequest: RemoteData<User, Error> = Loading;
  let translationsRequest: RemoteData<Translations, Error> = Loading;
  let appState: AppState = Initializing;

  fetchUser()
    .then(response => {
      userRequest = Success(response);

      if (isSuccess(userRequest) && isSuccess(translationsRequest)) {
        appState = Ready(userRequest.data, translationsRequest.data);
      }
    })
    .catch(error => {
      userRequest = Failure(error);
      appState = Failing(error);
    });

  fetchTranslations()
    .then(response => {
      translationsRequest = Success(response);

      if (isSuccess(userRequest) && isSuccess(translationsRequest)) {
        appState = Ready(userRequest.data, translationsRequest.data);
      }
    })
    .catch(error => {
      translationsRequest = Failure(error);
      appState = Failing(error);
    });
}