Static Multilanguage NextJS

[mohux]

Hello, I've been playing with multi-language nextjs using context,
assuming we have an array of languages, i have to do this in every page

export async function getStaticPaths() {
	return {
		paths: ALLOWED_LOCALES.map(locale => ({
			params: {
				lang: locale,
			},
		})),
		fallback: true,
	};
}

but it becomes chunky and hard to deal with as soon as we get nested dynamic pages like

[lang]/[category]/[item]

even getting an error like this

```Additional keys were returned from getStaticPaths in page "/[lang]/posts/[slug]". URL Parameters intended for this dynamic route must be nested under the `params` key, i.e.:
return { params: { lang: ..., slug: ... } }
Keys that need to be moved: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

The thing is
how about creating a tutorial on best ways to deal with multi-languages + dynamic pages, or nested dynamic routes with incremental static 

and to make it worth, how about making it paid?