fix(content): warn when nuxt content is loaded first

Author: harlan-zw

docs/content/2.guides/3.content.md

@@ -40,10 +40,22 @@ const { data: page } = await useAsyncData(`page-${route.path}`, () => {
   return queryCollection('content').path(route.path).first()
 })
 // Ensure the SEO meta tags are rendered
-useSeoMeta(page.value.seo)
+useSeoMeta(page.value?.seo || {})
 </script>
 ```
 
+Due to current Nuxt Content v3 limitations, you must load the robots module before the content module.
+
+```ts
+export default defineNuxtConfig({
+  modules: [
+    '@nuxtjs/robots',
+    '@nuxt/content' // <-- Must be after @nuxtjs/robots
+  ]
+})
+```
+
+
 ## Setup Nuxt Content v2
 
 In Nuxt Content v2 markdown files require either [Document Driven Mode](https://content.nuxt.com/document-driven/introduction) or a `path` key to be set

src/module.ts

@@ -335,6 +335,9 @@ export default defineNuxtModule<ModuleOptions>({
     const isNuxtContentV3 = usingNuxtContent && await hasNuxtModuleCompatibility('@nuxt/content', '^3')
     let isNuxtContentV2 = usingNuxtContent && await hasNuxtModuleCompatibility('@nuxt/content', '^2')
     if (isNuxtContentV3) {
+      if (nuxt.options._installedModules.some(m => m.meta.name === 'Content')) {
+        logger.warn('You have loaded `@nuxt/content` before `@nuxtjs/robots`, this may cause issues with the integration. Please ensure `@nuxtjs/robots` is loaded first.')
+      }
       // @ts-expect-error runtime type
       nuxt.hooks.hook('content:file:afterParse', (ctx) => {
         if (typeof ctx.content.robots !== 'undefined') {