The import.meta.url of the module defining these options.
languages: Record<string, Record<string, string>>
Preallocated languages to use for translations. This is useful if you want
to preallocate languages on the server and then hydrate them on the client.
If this is not provided, the client will try to get the language from the
provided fetch_url.
optional
fetch_url: string
Optional location to attempt fetching a translation from
optional
fallback_language: string
The fallback language to use if the browser's language is not supported/not set.
If this is not set, the fallback language will be the first language in the
languages object.