Get client language in getInitialProps method

[nueq22]

I need to set HTTP header with client locale in _app.js => getInitialProps.

How I can get the current i18n locale in this method?

Previously I used this lib that provides me something like this

App.getInitialProps = async ({ Component, ctx, ...rest }) => {
  const currentLanguage = isClient ? i18n.language : ctx.req.i18n.language;
...
}

How I can do something similar with the current package?

[aralroca]

I think you will have to wait until this PR is merged on Next.js core: vercel/next.js#21930

[nueq22]

Oh, exactly what I was looking for. Thank you for the answer. For now, I use router.locale, seems that result is pretty similar to what I want