import i18next from 'i18next';
import LanguageDetector from 'i18next-browser-languagedetector';

i18next.use(LanguageDetector).init(i18nextOptions);

{
  // order and from where user language should be detected
  order: ['querystring', 'cookie', 'localStorage', 'sessionStorage', 'navigator', 'htmlTag', 'path', 'subdomain'],

  // keys or params to lookup language from
  lookupQuerystring: 'lng',
  lookupCookie: 'i18next',
  lookupLocalStorage: 'i18nextLng',
  lookupSessionStorage: 'i18nextLng',
  lookupFromPathIndex: 0,
  lookupFromSubdomainIndex: 0,

  // cache user language on
  caches: ['localStorage', 'cookie'],
  excludeCacheFor: ['cimode'], // languages to not persist (cookie, localStorage)

  // optional expire and domain for set cookie
  cookieMinutes: 10,
  cookieDomain: 'myDomain',

  // optional htmlTag with lang attribute, the default is:
  htmlTag: document.documentElement,

  // optional set cookie options, reference:[MDN Set-Cookie docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie)
  cookieOptions: { path: '/', sameSite: 'strict' }
}

import i18next from 'i18next';
import LanguageDetector from 'i18next-browser-languagedetector';

i18next.use(LanguageDetector).init({
  detection: options,
});

import LanguageDetector from 'i18next-browser-languagedetector';
const languageDetector = new LanguageDetector(null, options);

import LanguageDetector from 'i18next-browser-languagedetector';
const languageDetector = new LanguageDetector();
languageDetector.init(options);

export default {
  name: 'myDetectorsName',

  lookup(options) {
    // options -> are passed in options
    return 'en';
  },

  cacheUserLanguage(lng, options) {
    // options -> are passed in options
    // lng -> current language, will be called after init and on changeLanguage
    // store it
  },
};

import LanguageDetector from 'i18next-browser-languagedetector';
const languageDetector = new LanguageDetector();
languageDetector.addDetector(myDetector);

i18next.use(languageDetector).init({
  detection: options,
});