Provide a server-side / Nitro composable to get access to the locale or useLocalePath

[jtuchel]

Describe the feature

First of all what I want to achieve:

I'm using Nuxt Auth Utils and signing in successfully I want to redirect the user by keeping the current locale. So if the user signed in from /fr/sign-in they should be redirected to /fr/ and not / ( english )

Based on this example code

~/server/routes/auth/github.get.ts

export default defineOAuthGitHubEventHandler({
  config: {},
  async onSuccess(event, { user, tokens }) {
    // set user session
    return sendRedirect(event, '/') // with locale
  },
  onError(event, error) {
    return sendRedirect(event, '/') // with locale
  },
})

I don't have access to the current selected browser locale. Even better would be to have the useLocalePath composable to have something like sendRedirect(event, localePath('/')).

It is possible to create an experimental custom locale detector ( https://i18n.nuxtjs.org/docs/guide/server-side-translations ) but AFAIK this only returns a translations function of type TranslationFunction<{}, DefineLocaleMessage, never>. So this code is invalid

const { t, locale, localePath } = await useTranslation(event);

I found this question

https://www.answeroverflow.com/m/1357209031042924555

but AFAIK this code is not correct. I don't have access to the useI18n composable server-side. Maybe the module is just unknown but it isn't auto-imported and I can't manually import it from the module.

So for my usecase I don't need server-side translations but I need any solution to enhance my redirect routes with the current locale.

Additional information

• Would you be willing to help implement this feature?
• Could this feature be implemented as a module?

Final checks

• Read the contribution guide (The contribution guideline of nuxt-modules/i18n is compliant with Nuxt too).
• Check existing discussions and issues.