fix: not work SPA (ssr: false) mode (#2099)

resolve #2029

src/bundler.ts

@@ -58,6 +58,7 @@ export async function extendBundler(
 
   const dynamicOptions: ResourceDynamicPluginOptions = {
     prerenderTargs: options.prerenderTargets,
+    ssr: nuxt.options.ssr,
     dev: nuxt.options.dev,
     sourcemap: nuxt.options.sourcemap.server || nuxt.options.sourcemap.client
   }

src/module.ts

@@ -113,7 +113,8 @@ export default defineNuxtModule<NuxtI18nOptions>({
 
     // for privates
     nuxt.options.runtimeConfig.i18n = defu(nuxt.options.runtimeConfig.i18n, {
-      precompile: options.precompile
+      precompile: options.precompile,
+      ssr: nuxt.options.ssr
     })
 
     /**

src/runtime/server/dynamic.ts

@@ -1,6 +1,6 @@
 import { defineEventHandler, setResponseHeader, createError } from 'h3'
 // @ts-expect-error
-import { useStorage } from '#imports'
+import { useStorage, useRuntimeConfig } from '#imports'
 import { relative, join } from 'pathe'
 import { isObject, isFunction } from '@intlify/shared'
 
@@ -10,18 +10,32 @@ import type { PrerenderTarget } from '../../utils'
 type ResourceMapValue = Pick<PrerenderTarget, 'type' | 'path'> & { locale?: string }
 
 export default defineEventHandler(async event => {
+  const config = useRuntimeConfig()
+
   const hash = event.context.params?.hash
   if (hash == null) {
     throw createError({ statusMessage: `require the 'hash'`, statusCode: 400 })
   }
 
-  const i18nMeta = await getI18nMeta()
-  const [filename] = hash.split('.') // request from `xxx.js`
+  /**
+   * resolve pre-comilable config or locales
+   */
+
+  const i18nMeta = await getI18nMeta(config.i18n.ssr)
+  const filename = getFilename(hash)
   const target = i18nMeta[filename]
 
-  const loadPath = await resolveModule(target.path)
+  /**
+   * import a module that can pre-compile config or locales.
+   */
+
+  const loadPath = await resolveModule(target.path, config.i18n.ssr)
   const loader = await import(loadPath).then(m => m.default || m)
 
+  /**
+   * pre-compile
+   */
+
   if (target.type === 'locale') {
     if (target.locale == null) {
       throw createError({ statusMessage: `not found locale`, statusCode: 500 })
@@ -41,16 +55,26 @@ export default defineEventHandler(async event => {
   }
 })
 
-async function getI18nMeta() {
-  return (await useStorage().getItem('build:dist:server:i18n-meta.json')) as Record<string, ResourceMapValue>
+function getFilename(hash: string) {
+  const [filename] = hash.split('.') // request from `xxx.js`
+  return filename
+}
+
+const resourcePlace = (ssr = true) => (ssr ? 'server' : 'client')
+
+async function getI18nMeta(ssr = true) {
+  return (await useStorage().getItem(`build:dist:${resourcePlace(ssr)}:i18n-meta.json`)) as Record<
+    string,
+    ResourceMapValue
+  >
 }
 
-async function resolveModule(path: string) {
+async function resolveModule(path: string, ssr = true) {
   const storage = await useStorage()
   const rootMount = await storage.getMount('root')
   const root = rootMount.driver.options.base
   const rootRelative = relative(new URL(import.meta.url).pathname, root)
-  return join(rootRelative, 'dist/server', path)
+  return join(rootRelative, `dist/${resourcePlace(ssr)}`, path)
 }
 
 async function precompileLocale(locale: string, filename: string, messages: LocaleMessages<DefineLocaleMessage>) {

src/transform/dynamic.ts

@@ -11,11 +11,12 @@ import type { PrerenderTargets, PrerenderTarget } from '../utils'
 
 export interface ResourceDynamicPluginOptions {
   prerenderTargs: PrerenderTargets
+  ssr: boolean
   dev?: boolean
   sourcemap?: boolean
 }
 
-type ResourceMapValue = Pick<PrerenderTarget, 'type'> & { ref: string; locale?: string }
+type ResourceMapValue = Pick<PrerenderTarget, 'type'> & { ref: string; hash: string; locale?: string }
 
 const debug = createDebug('@nuxtjs/i18n:transform:dynamic')
 
@@ -73,10 +74,12 @@ export const ResourceDynamicPlugin = createUnplugin((options: ResourceDynamicPlu
         const ref = this.emitFile({
           // @ts-expect-error
           type: 'chunk',
-          id
+          id,
+          preserveSignature: 'strict'
         }) as unknown as string
 
-        resoucesMap.set(hash, {
+        resoucesMap.set(id, {
+          hash,
           type: query.locale ? 'locale' : 'config',
           locale: query.locale as string,
           ref
@@ -87,10 +90,18 @@ export const ResourceDynamicPlugin = createUnplugin((options: ResourceDynamicPlu
     },
 
     vite: {
-      generateBundle() {
-        // console.log('generateBundle: outputOptions', outputOptions)
-        const resources = [...resoucesMap].reduce((obj, [hash, { type, locale, ref }]) => {
-          obj[hash] = { type, locale, path: this.getFileName(ref) }
+      generateBundle(outputOptions) {
+        /**
+         * NOTE:
+         * avoid generating i18n-meta.json for SPA mode,
+         * because some i18n resources doesn't bundle on server-side
+         */
+        if (!options.ssr && outputOptions.dir?.endsWith('server')) {
+          return
+        }
+
+        const resources = [...resoucesMap].reduce((obj, [_, { hash, type, locale, ref }]) => {
+          obj[hash] = { hash, type, locale, path: this.getFileName(ref) }
           return obj
         }, {} as Record<string, Omit<ResourceMapValue, 'ref'> & { path: string }>)
         debug('generateBundle: resources', resources)