rt-sim-training-client/src/utils/lang.js

import Cookies from 'js-cookie';

const I18N_LANG = 'user_lang';
export default {
	setLang(lang) {
		Cookies.set(I18N_LANG, lang);
		window.location.reload();
	},
	getLang(defaultLang) {
		const localLang = Cookies.get(I18N_LANG);

		if (localLang == null) {
			return defaultLang;
		} else {
			return localLang;
		}
	}
};