fix(prerendering): use i18n:registerModule hook

Author: larbish

layer/i18n/i18n.config.ts

@@ -1,4 +1,4 @@
-import { defineNuxtModule } from '@nuxt/kit'
+import { createResolver, defineNuxtModule } from '@nuxt/kit'
 import { defu } from 'defu'
 import { inferSiteURL, getPackageJsonMetadata } from '../utils/meta'
 import { getGitBranch, getGitEnv, getLocalGitInfo } from '../utils/git'
@@ -60,6 +60,29 @@ export default defineNuxtModule({
         ...nuxt.options.i18n,
         strategy: 'prefix',
       }
+
+      nuxt.hook('i18n:registerModule', (register) => {
+        const { resolve } = createResolver(import.meta.url)
+
+        const locales = nuxt.options.i18n?.locales?.map((locale) => {
+          return typeof locale === 'string'
+            ? {
+                code: locale,
+                name: locale,
+                file: `${locale}.json`,
+              }
+            : {
+                code: locale.code,
+                name: locale.name || locale.code,
+                file: `${locale.code}.json`,
+              }
+        })
+
+        register({
+          langDir: resolve('../i18n/locales'),
+          locales,
+        })
+      })
     }
   },
 })

layer/modules/default-configs.ts

@@ -1,4 +1,4 @@
-import { extendViteConfig, createResolver } from '@nuxt/kit'
+import { extendViteConfig, createResolver, useNuxt } from '@nuxt/kit'
 
 const { resolve } = createResolver(import.meta.url)
 
@@ -44,6 +44,25 @@ export default defineNuxtConfig({
       autoSubfolderIndex: false,
     },
   },
+  hooks: {
+    'nitro:config'(nitroConfig) {
+      const nuxt = useNuxt()
+
+      const i18nOptions = nuxt.options.i18n
+
+      const routes: string[] = []
+      if (!i18nOptions) {
+        routes.push('/')
+      }
+      else {
+        routes.push(...(i18nOptions.locales?.map(locale => typeof locale === 'string' ? `/${locale}` : `/${locale.code}`) || []))
+      }
+
+      nitroConfig.prerender = nitroConfig.prerender || {}
+      nitroConfig.prerender.routes = nitroConfig.prerender.routes || []
+      nitroConfig.prerender.routes.push(...(routes || []))
+    },
+  },
   icon: {
     provider: 'iconify',
   },