fix: cookie being reset on reload in ssg build

specs/ssg/no_prefix.spec.ts

@@ -0,0 +1,45 @@
+import { test, expect } from 'vitest'
+import { fileURLToPath } from 'node:url'
+import { setup } from '../utils'
+import { getText, gotoPath, renderPage, startServerWithRuntimeConfig, waitForURL } from '../helper'
+
+await setup({
+  rootDir: fileURLToPath(new URL(`../fixtures/basic`, import.meta.url)),
+  browser: true,
+  prerender: true,
+  // overrides
+  nuxtConfig: {
+    i18n: {
+      debug: true,
+      strategy: 'no_prefix',
+      detectBrowserLanguage: {
+        useCookie: true,
+        cookieKey: 'my_custom_cookie_name',
+        redirectOn: 'root',
+        cookieCrossOrigin: true,
+        cookieSecure: true
+      }
+    }
+  }
+})
+
+test('does not reset cookie no refresh', async () => {
+  const { page } = await renderPage('/', { locale: 'en' })
+  const ctx = await page.context()
+  expect(await ctx.cookies()).toMatchObject([
+    { name: 'my_custom_cookie_name', value: 'en', secure: true, sameSite: 'None' }
+  ])
+
+  // click `fr` lang switch link
+  await page.locator('#set-locale-link-fr').click()
+  expect(await ctx.cookies()).toMatchObject([
+    { name: 'my_custom_cookie_name', value: 'fr', secure: true, sameSite: 'None' }
+  ])
+
+  await page.reload()
+  await waitForURL(page, '/')
+
+  expect(await ctx.cookies()).toMatchObject([
+    { name: 'my_custom_cookie_name', value: 'fr', secure: true, sameSite: 'None' }
+  ])
+})

specs/utils/context.ts

@@ -11,7 +11,7 @@ export function createTestContext(options: Partial<TestOptions>): TestContext {
     configFile: 'nuxt.config',
     setupTimeout: 120 * 1000,
     dev: !!JSON.parse(process.env.NUXT_TEST_DEV || 'false'),
-    prerender: false,
+    prerender: options.prerender ?? false,
     logLevel: 1,
     server: true,
     build: options.browser !== false || options.server !== false,

specs/utils/nuxt.ts

@@ -59,17 +59,17 @@ export async function loadFixture(testContext: VitestContext) {
     let testKey = getTestKey(testContext)
 
     const buildDir = resolve(ctx.options.rootDir, '.nuxt', testKey)
-    const outputDir = ctx.options.prerender
-      ? resolve(buildDir, 'output', testKey)
-      : resolve(ctx.options.rootDir, '.output', testKey)
+    const outputDir = resolve(ctx.options.rootDir, '.output', testKey)
 
     ctx.options.nuxtConfig = defu(ctx.options.nuxtConfig, {
       buildDir,
       // NOTE: the following code is added for prerender
       _generate: ctx.options.prerender,
       nitro: {
+        ...(ctx.options.prerender ? { static: true } : {}),
         output: {
-          dir: outputDir
+          dir: outputDir,
+          ...(ctx.options.prerender ? { publicDir: outputDir + '/public' } : {})
         }
       }
     })

specs/utils/server.ts

@@ -49,28 +49,23 @@ export async function startServer(env: Record<string, unknown> = {}) {
     ctx.serverProcess.kill()
     throw lastError || new Error('Timeout waiting for dev server!')
   } else if (ctx.options.prerender) {
-    const command = `npx serve -s ./dist -p ${port}`
+    const command = `npx serve -s ${ctx.nuxt!.options.nitro!.output?.publicDir} -l tcp://${host}:${port} --no-port-switching`
+    // ; (await import('consola')).consola.restoreConsole()
     const [_command, ...commandArgs] = command.split(' ')
+
     ctx.serverProcess = execa(_command, commandArgs, {
-      cwd: ctx.nuxt!.options.rootDir,
+      //@ts-ignore
       env: {
+        ...process.env,
+        PORT: String(port),
+        HOST: host,
         ...env
       }
-      // stdio: 'inherit'
     })
-    await waitForPort(port, { retries: 32 })
-    for (let i = 0; i < 50; i++) {
-      await new Promise(resolve => setTimeout(resolve, 100))
-      try {
-        const res = await $fetch(ctx.nuxt!.options.app.baseURL)
-        if (!res.includes('__NUXT_LOADING__')) {
-          return
-        }
-      } catch {}
-    }
-    ctx.serverProcess.kill()
-    throw new Error('Timeout waiting for ssg preview!')
+
+    await waitForPort(port, { retries: 32, host, delay: 1000 })
   } else {
+    //@ts-ignore
     ctx.serverProcess = execa('node', [resolve(ctx.nuxt!.options.nitro.output!.dir!, 'server/index.mjs')], {
       stdio: 'inherit',
       env: {

src/runtime/plugins/i18n.ts

@@ -152,6 +152,7 @@ export default defineNuxtPlugin({
      *  avoid hydration mismatch for SSG mode
      */
     if (isSSGModeInitialSetup() && runtimeI18n.strategy === 'no_prefix' && import.meta.client) {
+      const initialLocaleCookie = localeCookie.value
       nuxt.hook('app:mounted', async () => {
         __DEBUG__ && logger.log('hook app:mounted')
         const detected = detectBrowserLanguage(
@@ -160,7 +161,7 @@ export default defineNuxtPlugin({
             ssg: 'ssg_setup',
             callType: 'setup',
             firstAccess: true,
-            localeCookie: getLocaleCookie(localeCookie, _detectBrowserLanguage, runtimeI18n.defaultLocale)
+            localeCookie: initialLocaleCookie
           },
           initialLocale
         )