import i18next from 'i18next'
import LanguageDetector from 'i18next-browser-languagedetector'
import HttpApi from 'i18next-http-backend'
import { initReactI18next } from 'react-i18next'

declare module 'i18next' {
  interface CustomTypeOptions {
    returnNull: false
  }
}

i18next
  .use(HttpApi)
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
    backend: {
      crossDomain: true,
      loadPath() {
        return 'https://raw.githubusercontent.com/mars-protocol/translations/master/{{lng}}.json'
      },
    },
    react: {
      useSuspense: true,
    },
    fallbackLng: ['en'],
    preload: ['en'],
    keySeparator: '.',
    interpolation: { escapeValue: false },
    lowerCaseLng: true,
    load: 'languageOnly',
  })

export default i18next