setUserLanguageCode.fp.js

const storeLanguageCode = tryCatch({
  tryer: (languageCode) => {
    window.localStorage.setItem("LANG_CODE", languageCode);
    return true;
  },
  catcher: (languageCode, errorMessage) => {
    logger.log(`${errorMessage} <-- happened while storing ${languageCode}`);
    return false;
  }
});

const setUserLanguageCode = pipe(
  getLanguageCode,
  languageCode => storeLanguageCode(langaugeCode), // or just storeLanguageCode
  storedSuccessfully => ({ storedSuccessfully })
);

// setUserLanguageCode("en-US") will work as before.