Extending prerender routes with Sanity

[MartCube]

I'm trying to extend prerender routes fallowing this example

export default defineNuxtConfig({
  hooks: {
    async 'nitro:config' (nitroConfig) {
      if (nitroConfig.dev) { return }
      // ..Async logic..
      nitroConfig.prerender.routes.push('/custom')
    }
  }
})

At this point I believe Sanity Client is not initialized.
I'm straggling to call Sanity and pass the array of dynamic routes who are not prerender by Nitro.

[MartCube]

I installed @sanity/client and added the fallowing code to my nuxt.config
created a function where I write my fetching logic and then calling it inside of hook

import sanityClient from '@sanity/client'

export const getRoutes = async () => {
	const query = '*[_type == "article"].uid.current'
	const client = sanityClient({
		projectId: 'XXX',
		dataset: 'production',
		apiVersion: '2022-11-21',
		useCdn: true,
	})
	const data = await client.fetch(query)
	return data
}

export default defineNuxtConfig({
  hooks: {
    async 'nitro:config'(nitroConfig: any) {
	  if (nitroConfig.dev) { return }
	  const routes = await getRoutes()
	  nitroConfig.prerender.routes.push(...routes)
    }
  },
})

Like this everything works as desired and I get the wanted results with no errors.
However I still have some small questions.

1. I see that @sanity/client is used inside of @nuxtjs/sanity. Is there a way to make the call without adding @sanity/client as dependency to my project, using @nuxtjs/sanity only ?
2. This question is not related to @nuxtjs/sanity, however what is the best way to move the whole fetch logic to another file and then just import it inside nuxt.config ? ( with this nuxt.config gets a lot cleaner )

[toddpadwick]

I have posted a discussion on this to be used with Nuxt's new routeRules, but I am struggling to still work out the best way. I have done something inspired by your solution @MartCube but not sure if what I have done will affect performance in a bad way or not. Can you spot any issues with this? https://github.com/nuxt/framework/discussions/9673