feat: allow factory function for customClient (#219)

* feat: allow factory function for customClient

* docs: wording

* chore: use runWithContext

Author: huang-julien

docs/content/2.guides/2.advanced/1.custom-client.md

@@ -5,11 +5,16 @@ description: ''
 
 # Custom Client
 
-You can make the module use your own [`@prismicio/client`](https://prismic.io/docs/technical-reference/prismicio-client?utm_campaign=devexp&utm_source=nuxt3doc&utm_medium=doc) instance. To do so, export it from `~/prismic/client` (`~/app/prismic/client` on Nuxt 3):
+You can make the module use your own [`@prismicio/client`](https://prismic.io/docs/technical-reference/prismicio-client?utm_campaign=devexp&utm_source=nuxt3doc&utm_medium=doc) instance. To do so, export it from `~/prismic/client` (`~/app/prismic/client` on Nuxt 3), it can be either a factory function or the custom client:
 
 ```javascript [~/prismic/client.[jt]s]
 import { createClient } from '@prismicio/client'
 
+export default () => {
+    // this will be run inside by a nuxt plugin. So you will have access to the nuxt instance inside of it.
+    return createClient('my-repository')
+}
+
 export default createClient('my-repository')
 ```
 

src/runtime/plugin.ts

@@ -6,14 +6,16 @@ import NuxtLink from '#app/components/nuxt-link'
 import { defineNuxtPlugin, useCookie, useRequestEvent, onNuxtReady, refreshNuxtData, useHead, useRuntimeConfig, useRouter } from '#imports'
 
 // @ts-expect-error vfs cannot be resolved here
-import client from '#build/prismic/proxy/client'
+import _client from '#build/prismic/proxy/client'
 // @ts-expect-error vfs cannot be resolved here
 import linkResolver from '#build/prismic/proxy/linkResolver'
 // @ts-expect-error vfs cannot be resolved here
 import richTextSerializer from '#build/prismic/proxy/richTextSerializer'
 
-export default defineNuxtPlugin((nuxtApp) => {
+export default defineNuxtPlugin(async (nuxtApp) => {
 	const options: PrismicModuleOptions = useRuntimeConfig().public.prismic
+	const client = typeof _client === 'function' ? await nuxtApp.runWithContext(() => _client()) : _client
+
 	const endpoint = options.environment || options.endpoint || (client as Client | undefined)?.endpoint || ''
 
 	const prismicPlugin = createPrismic({