I'm trying to show the index page of my website in the default language pt-BR, so when user access that page the url will be '/', but the [lang]/pt-BR will be render.

I try this:

const nextConfig = nextTranslate({
  async rewrites() {
    return [
       {
          source: '/',
          destination: '/pt-BR',
       },
    ]
  },
});

module.exports = nextConfig;