Duplicate urls with different hreflang prevented in static routes

[learntheropes]

When used in conjunction with nuxt-i18n module, duplicate urls with different hreflang are prevented in static routes.

Duplicate urls may be necessary when you want to specify a region and a region-independent link

This technique is considered valid and even encouraged here (Tester suggested in Google documentation here)

As an example, this sitemap is impossible to generate:

<loc>https://mydomain.com/en</loc>
<lastmod>2022-12-05T07:28:26.630Z</lastmod>
<changefreq>daily</changefreq>
<priority>1.0</priority>
<xhtml:link rel="alternate" hreflang="en-us" href="https://mydomain.com/en"/>
<xhtml:link rel="alternate" hreflang="pt-br" href="https://mydomain.com/pt"/>
<xhtml:link rel="alternate" hreflang="en" href="https://mydomain.com/en"/>
<xhtml:link rel="alternate" hreflang="pt" href="https://mydomain.com/pt"/>
<xhtml:link rel="alternate" hreflang="x-default" href="https://mydomain.com"/>
</url>

The workaround is to exclude all the static routes with the exclude property and include them in the dynamic routes generation with routes property.