React i18next get language in utility function

I'm using react-i18next in a React app.

As in the Quick Start guide, I can easily get the current language in a function component, with the useTranslation hook:

import { useTranslation } from 'react-i18next';

...

const { t, i18n } = useTranslation();
const language = i18n.language;

But how to get it in a utility function, where I can't use the hook?

You can get it by importing i18next:

import i18next from 'i18next';

export function getMessage(): string {
  const language = i18next.language;
  ...
}