I18next: Cloning produces error "Cannot read property 'toResolveHierarchy' of undefined"

[septagram]

I'm trying to create multiple instances of i18next with different lng:

import i18next from 'i18next'

const auto = i18next.createInstance ({
    debug: !!FocusCraft.config.debug,
    load: 'languageOnly',
    lng: navigator.language || navigator.userLanguage,
    fallbackLng: 'en',
    resources: {
        en: {
            hello: 'Hello World!',
        },
        ru: {
            hello: 'Привет мир!',
        },
    },
})

const locales = {
    en: auto.cloneInstance ({ lng: 'en' }),
    ru: auto.cloneInstance ({ lng: 'ru' }),
}

...But once it gets to cloneInstance(), i18next dies with an error:

i18next.js:273 Uncaught TypeError: Cannot read property 'toResolveHierarchy' of undefined
at setLng (i18next.js:273)
at I18n.changeLanguage (i18next.js:290)
at load (i18next.js:159)
at I18n.init (i18next.js:169)
at I18n.cloneInstance (i18next.js:392)
at Object.defineProperty.value (i18n.js:19)
at __webpack_require__ (bootstrap 06f5bf9…:19)
at Object.defineProperty.value (App.jsx:9)
at __webpack_require__ (bootstrap 06f5bf9…:19)
at Object.defineProperty.value (AppContainer.jsx:5)
at __webpack_require__ (bootstrap 06f5bf9…:19)
at Object. (main.jsx:11)
at __webpack_require__ (bootstrap 06f5bf9…:19)
at Object. (emitter.js:2)
at __webpack_require__ (bootstrap 06f5bf9…:19)
at bootstrap 06f5bf9…:65

In this case, I'd really like to keep several instances. I could just create them individually, but clones would be better, as they supposedly share resources. Am I using clones in a wrong way?

[jamuhl]

Calling i18next.createInstance(opts) will not initialize it.

a) pass a callback i18next.createInstance(opts, cb) so init will be called on creating
b) call init on the instance auto.init()

after doing so cloning should be possible.

[septagram]

@jamuhl Thanks ) You're right, it was written in documentation. Still, for me .cloneInstance ({ lng: 'ru' }) still doesn't work, even if I pass a callback. The only way I managed to get it to work was to do .changeLanguage ('ru') on the cloned instance.

[jamuhl]

hm...should work...wondering...will need to check doing some unit tests. Will do later as rather busy right now.

[jamuhl]

should be fixed in [email protected]

[jamuhl]

solved...

[septagram]

Thanks a lot :)