Merge remote-tracking branch 'origin/main' into fix/14275-nuxt-3-does-not-respect-layouts-in-separate-folders

docs/2.guide/2.directory-structure/1.components.md

@@ -350,10 +350,6 @@ In this case, the `.server` + `.client` components are two 'halves' of a compone
 </template>
 ```
 
-::alert{type=warning}
-It is essential that the client half of the component can 'hydrate' the server-rendered HTML. That is, it should render the same HTML on initial load, or you will experience a hydration mismatch.
-::
-
 ## `<DevOnly>` Component
 
 Nuxt provides the `<DevOnly>` component to render a component only during development.

docs/3.api/1.composables/use-async-data.md

@@ -26,10 +26,12 @@ type AsyncDataOptions<DataT> = {
   server?: boolean
   lazy?: boolean
   immediate?: boolean
+  deep?: boolean
   default?: () => DataT | Ref<DataT> | null
   transform?: (input: DataT) => DataT
   pick?: string[]
   watch?: WatchSource[]
+  getCachedData?: (key: string) => any
 }
 
 type AsyncData<DataT, ErrorT> = {
@@ -60,6 +62,8 @@ type AsyncDataRequestStatus = 'idle' | 'pending' | 'success' | 'error'
   * _transform_: a function that can be used to alter `handler` function result after resolving
   * _pick_: only pick specified keys in this array from the `handler` function result
   * _watch_: watch reactive sources to auto-refresh
+  * _getCachedData_: a function that receives a cache key and can return cached data if it exists (by default it returns `nuxtApp.payload.data[key]` when hydrating and `nuxtApp.static.data[key]` after the app is hydrated). You can use this to build your own custom cache for `useAsyncData`.
+  * _deep_: return data in a deep ref object (it is `true` by default). It can be set to `false` to return data in a shallow ref object, which can improve performance if your data does not need to be deeply reactive.
 
 Under the hood, `lazy: false` uses `<Suspense>` to block the loading of the route before the data has been fetched. Consider using `lazy: true` and implementing a loading state instead for a snappier user experience.
 

docs/3.api/1.composables/use-fetch.md

@@ -26,6 +26,8 @@ type UseFetchOptions<DataT> = {
   server?: boolean
   lazy?: boolean
   immediate?: boolean
+  getCachedData?: (key: string) => any
+  deep?: boolean
   default?: () => DataT
   transform?: (input: DataT) => DataT
   pick?: string[]
@@ -72,6 +74,8 @@ All fetch options can be given a `computed` or `ref` value. These will be watche
   * `transform`: a function that can be used to alter `handler` function result after resolving
   * `pick`: only pick specified keys in this array from the `handler` function result
   * `watch`: watch an array of reactive sources and auto-refresh the fetch result when they change. Fetch options and URL are watched by default. You can completely ignore reactive sources by using `watch: false`. Together with `immediate: false`, this allows for a fully-manual `useFetch`.
+  * `getCachedData`: a function that receives a cache key and can return cached data if it exists (by default it returns `nuxtApp.payload.data[key]` when hydrating and `nuxtApp.static.data[key]` after the app is hydrated). You can use this to build your own custom cache for `useFetch`.
+  * `deep`: return data in a deep ref object (it is `true` by default). It can be set to `false` to return data in a shallow ref object, which can improve performance if your data does not need to be deeply reactive.
 
 ::alert{type=warning}
 If you provide a function or ref as the `url` parameter, or if you provide functions as arguments to the `options` parameter, then the [`useFetch`](/docs/api/composables/use-fetch) call will not match other [`useFetch`](/docs/api/composables/use-fetch) calls elsewhere in your codebase, even if the options seem to be identical. If you wish to force a match, you may provide your own key in `options`.

docs/3.api/1.composables/use-state.md

@@ -24,3 +24,12 @@ Because the data inside [`useState`](/docs/api/composables/use-state) will be se
 
 ::ReadMore{link="/docs/getting-started/state-management"}
 ::
+
+## Using `shallowRef`
+
+If you don't need your state to be deeply reactive, you can combine `useState` with [`shallowRef`](https://vuejs.org/api/reactivity-advanced.html#shallowref). This can improve performance when your state contains large objects and arrays.
+
+```ts
+const state = useState('my-shallow-state', () => shallowRef({ deep: 'not reactive' }))
+// isShallow(state) === true
+```

packages/nuxt/src/app/components/client-only.ts

@@ -1,5 +1,6 @@
-import { createElementBlock, createElementVNode, defineComponent, h, mergeProps, onMounted, ref } from 'vue'
+import { createElementBlock, createElementVNode, createStaticVNode, defineComponent, getCurrentInstance, h, onMounted, ref } from 'vue'
-import type { ComponentOptions } from 'vue'
+import type { ComponentInternalInstance, ComponentOptions } from 'vue'
+import { getFragmentHTML } from './utils'
 
 export default defineComponent({
   name: 'ClientOnly',
@@ -39,7 +40,8 @@ export function createClientOnly<T extends ComponentOptions> (component: T) {
           ? createElementVNode(res.type, res.props, res.children, res.patchFlag, res.dynamicProps, res.shapeFlag)
           : h(res)
       } else {
-        return h('div', mergeProps(ctx.$attrs ?? ctx._.attrs, { key: 'placeholder-key' }))
+        const fragment = getFragmentHTML(ctx._.vnode.el ?? null)
+        return process.client ? createStaticVNode(fragment.join(''), fragment.length) : h('div', ctx.$attrs ?? ctx._.attrs)
       }
     }
   } else if (clone.template) {
@@ -51,8 +53,20 @@ export function createClientOnly<T extends ComponentOptions> (component: T) {
   }
 
   clone.setup = (props, ctx) => {
+    const instance = getCurrentInstance()!
+
+    const attrs = instance.attrs
+    // remove existing directives during hydration
+    const directives = extractDirectives(instance)
+    // prevent attrs inheritance since a staticVNode is rendered before hydration
+    instance.attrs = {}
     const mounted$ = ref(false)
-    onMounted(() => { mounted$.value = true })
+
+    onMounted(() => {
+      instance.attrs = attrs
+      instance.vnode.dirs = directives
+      mounted$.value = true
+    })
 
     return Promise.resolve(component.setup?.(props, ctx) || {})
       .then((setupState) => {
@@ -65,7 +79,8 @@ export function createClientOnly<T extends ComponentOptions> (component: T) {
                   ? createElementVNode(res.type, res.props, res.children, res.patchFlag, res.dynamicProps, res.shapeFlag)
                   : h(res)
               } else {
-                return h('div', mergeProps(ctx.attrs, { key: 'placeholder-key' }))
+                const fragment = getFragmentHTML(instance?.vnode.el ?? null)
+                return process.client ? createStaticVNode(fragment.join(''), fragment.length) : h('div', ctx.attrs)
               }
             }
       })
@@ -75,3 +90,10 @@ export function createClientOnly<T extends ComponentOptions> (component: T) {
 
   return clone
 }
+
+function extractDirectives (instance: ComponentInternalInstance | null) {
+  if (!instance || !instance.vnode.dirs) { return null }
+  const directives = instance.vnode.dirs
+  instance.vnode.dirs = null
+  return directives
+}

packages/nuxt/src/app/components/utils.ts

@@ -104,7 +104,7 @@ export function vforToArray (source: any): any[] {
  * @param withoutSlots purge all slots from the HTML string retrieved
  * @returns {string[]} An array of string which represent the content of each element. Use `.join('')` to retrieve a component vnode.el HTML
  */
-export function getFragmentHTML (element: RendererNode | null, withoutSlots = false) {
+export function getFragmentHTML (element: RendererNode | null, withoutSlots = false): string[] {
   if (element) {
     if (element.nodeName === '#comment' && element.nodeValue === '[') {
       return getFragmentChildren(element, [], withoutSlots)

packages/nuxt/src/app/composables/asyncData.ts

@@ -1,4 +1,4 @@
-import { getCurrentInstance, onBeforeMount, onServerPrefetch, onUnmounted, ref, toRef, unref, watch } from 'vue'
+import { getCurrentInstance, onBeforeMount, onServerPrefetch, onUnmounted, ref, shallowRef, toRef, unref, watch } from 'vue'
 import type { Ref, WatchSource } from 'vue'
 import type { NuxtApp } from '../nuxt'
 import { useNuxtApp } from '../nuxt'
@@ -40,10 +40,12 @@ export interface AsyncDataOptions<
   server?: boolean
   lazy?: boolean
   default?: () => DefaultT | Ref<DefaultT>
+  getCachedData?: (key: string) => DataT
   transform?: _Transform<ResT, DataT>
   pick?: PickKeys
   watch?: MultiWatchSources
   immediate?: boolean
+  deep?: boolean
 }
 
 export interface AsyncDataExecuteOptions {
@@ -59,15 +61,14 @@ export interface AsyncDataExecuteOptions {
 export interface _AsyncData<DataT, ErrorT> {
   data: Ref<DataT>
   pending: Ref<boolean>
-  refresh: (opts?: AsyncDataExecuteOptions) => Promise<void>
+  refresh: (opts?: AsyncDataExecuteOptions) => Promise<DataT>
-  execute: (opts?: AsyncDataExecuteOptions) => Promise<void>
+  execute: (opts?: AsyncDataExecuteOptions) => Promise<DataT>
   error: Ref<ErrorT | null>
   status: Ref<AsyncDataRequestStatus>
 }
 
 export type AsyncData<Data, Error> = _AsyncData<Data, Error> & Promise<_AsyncData<Data, Error>>
 
-const getDefault = () => null
 export function useAsyncData<
   ResT,
   DataE = Error,
@@ -131,25 +132,31 @@ export function useAsyncData<
     throw new TypeError('[nuxt] [asyncData] handler must be a function.')
   }
 
+  // Setup nuxt instance payload
+  const nuxt = useNuxtApp()
+
+  // Used to get default values
+  const getDefault = () => null
+  const getDefaultCachedData = () => nuxt.isHydrating ? nuxt.payload.data[key] : nuxt.static.data[key]
+
   // Apply defaults
   options.server = options.server ?? true
   options.default = options.default ?? (getDefault as () => DefaultT)
+  options.getCachedData = options.getCachedData ?? getDefaultCachedData
 
   options.lazy = options.lazy ?? false
   options.immediate = options.immediate ?? true
 
-  // Setup nuxt instance payload
+  const hasCachedData = () => ![null, undefined].includes(options.getCachedData!(key) as any)
-  const nuxt = useNuxtApp()
-
-  const getCachedData = () => nuxt.isHydrating ? nuxt.payload.data[key] : nuxt.static.data[key]
-  const hasCachedData = () => getCachedData() !== undefined
 
   // Create or use a shared asyncData entity
   if (!nuxt._asyncData[key] || !options.immediate) {
     nuxt.payload._errors[key] ??= null
 
+    const _ref = options.deep !== true ? shallowRef : ref
+
     nuxt._asyncData[key] = {
-      data: ref(getCachedData() ?? options.default!()),
+      data: _ref(options.getCachedData!(key) ?? options.default!()),
       pending: ref(!hasCachedData()),
       error: toRef(nuxt.payload._errors, key),
       status: ref('idle')
@@ -163,13 +170,13 @@ export function useAsyncData<
     if (nuxt._asyncDataPromises[key]) {
       if (opts.dedupe === false) {
         // Avoid fetching same key more than once at a time
-        return nuxt._asyncDataPromises[key]
+        return nuxt._asyncDataPromises[key]!
       }
       (nuxt._asyncDataPromises[key] as any).cancelled = true
     }
     // Avoid fetching same key that is already fetched
     if ((opts._initial || (nuxt.isHydrating && opts._initial !== false)) && hasCachedData()) {
-      return getCachedData()
+      return Promise.resolve(options.getCachedData!(key))
     }
     asyncData.pending.value = true
     asyncData.status.value = 'pending'
@@ -217,7 +224,7 @@ export function useAsyncData<
         delete nuxt._asyncDataPromises[key]
       })
     nuxt._asyncDataPromises[key] = promise
-    return nuxt._asyncDataPromises[key]
+    return nuxt._asyncDataPromises[key]!
   }
 
   const initialFetch = () => asyncData.refresh({ _initial: true })
@@ -230,7 +237,7 @@ export function useAsyncData<
     if (getCurrentInstance()) {
       onServerPrefetch(() => promise)
     } else {
-      nuxt.hook('app:created', () => promise)
+      nuxt.hook('app:created', async () => { await promise })
     }
   }
 
@@ -250,7 +257,7 @@ export function useAsyncData<
       }
     }
 
-    if (fetchOnServer && nuxt.isHydrating && hasCachedData()) {
+    if (asyncData.error.value || (fetchOnServer && nuxt.isHydrating && hasCachedData())) {
       // 1. Hydration (server: true): no fetch
       asyncData.pending.value = false
       asyncData.status.value = asyncData.error.value ? 'error' : 'success'
@@ -265,9 +272,9 @@ export function useAsyncData<
     if (options.watch) {
       watch(options.watch, () => asyncData.refresh())
     }
-    const off = nuxt.hook('app:data:refresh', (keys) => {
+    const off = nuxt.hook('app:data:refresh', async (keys) => {
       if (!keys || keys.includes(key)) {
-        return asyncData.refresh()
+        await asyncData.refresh()
       }
     })
     if (instance) {

packages/nuxt/src/app/composables/cookie.ts

@@ -35,8 +35,6 @@ export function useCookie<T = string | null | undefined> (name: string, _opts?:
 
   if (import.meta.client) {
     const channel = typeof BroadcastChannel === 'undefined' ? null : new BroadcastChannel(`nuxt:cookies:${name}`)
-    if (getCurrentScope()) { onScopeDispose(() => { channel?.close() }) }
-
     const callback = () => {
       writeClientCookie(name, cookie.value, opts as CookieSerializeOptions)
       channel?.postMessage(opts.encode(cookie.value as T))
@@ -44,6 +42,14 @@ export function useCookie<T = string | null | undefined> (name: string, _opts?:
 
     let watchPaused = false
 
+    if (getCurrentScope()) {
+      onScopeDispose(() => {
+        watchPaused = true
+        callback()
+        channel?.close()
+      })
+    }
+
     if (channel) {
       channel.onmessage = (event) => {
         watchPaused = true

packages/nuxt/src/app/composables/fetch.ts

@@ -13,7 +13,7 @@ type AvailableRouterMethod<R extends NitroFetchRequest> = _AvailableRouterMethod
 export type FetchResult<ReqT extends NitroFetchRequest, M extends AvailableRouterMethod<ReqT>> = TypedInternalResponse<ReqT, unknown, Lowercase<M>>
 
 type ComputedOptions<T extends Record<string, any>> = {
-  [K in keyof T]: T[K] extends Function ? T[K] : T[K] extends Record<string, any> ? ComputedOptions<T[K]> | Ref<T[K]> | T[K] : Ref<T[K]> | T[K]
+  [K in keyof T]: T[K] extends Function ? T[K] : ComputedOptions<T[K]> | Ref<T[K]> | T[K]
 }
 
 interface NitroFetchOptions<R extends NitroFetchRequest, M extends AvailableRouterMethod<R> = AvailableRouterMethod<R>> extends FetchOptions {
@@ -107,6 +107,8 @@ export function useFetch<
     pick,
     watch,
     immediate,
+    getCachedData,
+    deep,
     ...fetchOptions
   } = opts
 
@@ -122,6 +124,8 @@ export function useFetch<
     transform,
     pick,
     immediate,
+    getCachedData,
+    deep,
     watch: watch === false ? [] : [_fetchOptions, _request, ...(watch || [])]
   }
 

packages/webpack/package.json

@@ -34,7 +34,7 @@
     "fs-extra": "^11.1.1",
     "h3": "^1.8.2",
     "hash-sum": "^2.0.0",
-    "lodash-es": "^4.17.21",
+    "klona": "^2.0.6",
     "magic-string": "^0.30.4",
     "memfs": "^4.6.0",
     "mini-css-extract-plugin": "^2.7.6",
@@ -65,7 +65,6 @@
     "@nuxt/schema": "workspace:*",
     "@types/fs-extra": "11.0.2",
     "@types/hash-sum": "1.0.0",
-    "@types/lodash-es": "4.17.9",
     "@types/pify": "5.0.2",
     "@types/webpack-bundle-analyzer": "4.6.1",
     "@types/webpack-hot-middleware": "2.25.7",

packages/webpack/src/plugins/vue/client.ts

@@ -6,7 +6,6 @@
 import { normalizeWebpackManifest } from 'vue-bundle-renderer'
 import { dirname } from 'pathe'
 import hash from 'hash-sum'
-import { uniq } from 'lodash-es'
 import fse from 'fs-extra'
 
 import type { Nuxt } from '@nuxt/schema'
@@ -18,6 +17,10 @@ interface PluginOptions {
   nuxt: Nuxt
 }
 
+function uniq <T> (items: T[]) {
+  return [...new Set(items)]
+}
+
 export default class VueSSRClientPlugin {
   options: PluginOptions
 

packages/webpack/src/utils/config.ts

@@ -1,7 +1,7 @@
-import { cloneDeep } from 'lodash-es'
 import type { Configuration } from 'webpack'
 import type { Nuxt, NuxtOptions } from '@nuxt/schema'
 import { logger } from '@nuxt/kit'
+import { klona } from 'klona'
 
 export interface WebpackConfigContext {
   nuxt: Nuxt
@@ -67,6 +67,6 @@ export function fileName (ctx: WebpackConfigContext, key: string) {
 }
 
 export function getWebpackConfig (ctx: WebpackConfigContext): Configuration {
-  // Clone deep avoid leaking config between Client and Server
+  // Clone to avoid leaking config between Client and Server
-  return cloneDeep(ctx.config)
+  return klona(ctx.config)
 }

packages/webpack/src/utils/postcss.ts

@@ -1,7 +1,7 @@
 import { createCommonJS } from 'mlly'
-import { cloneDeep, defaults, merge } from 'lodash-es'
 import { requireModule } from '@nuxt/kit'
 import type { Nuxt } from '@nuxt/schema'
+import { defu } from 'defu'
 
 const isPureObject = (obj: unknown): obj is Object => obj !== null && !Array.isArray(obj) && typeof obj === 'object'
 
@@ -26,15 +26,6 @@ const orderPresets = {
 }
 
 export const getPostcssConfig = (nuxt: Nuxt) => {
-  function defaultConfig () {
-    return {
-      sourceMap: nuxt.options.webpack.cssSourceMap,
-      plugins: nuxt.options.postcss.plugins,
-      // Array, String or Function
-      order: 'autoprefixerAndCssnanoLast'
-    }
-  }
-
   function sortPlugins ({ plugins, order }: any) {
     const names = Object.keys(plugins)
     if (typeof order === 'string') {
@@ -43,32 +34,26 @@ export const getPostcssConfig = (nuxt: Nuxt) => {
     return typeof order === 'function' ? order(names, orderPresets) : (order || names)
   }
 
-  function loadPlugins (config: any) {
-    if (!isPureObject(config.plugins)) { return }
-
-    // Map postcss plugins into instances on object mode once
-    const cjs = createCommonJS(import.meta.url)
-    config.plugins = sortPlugins(config).map((pluginName: string) => {
-      const pluginFn = requireModule(pluginName, { paths: [cjs.__dirname] })
-      const pluginOptions = config.plugins[pluginName]
-      if (!pluginOptions || typeof pluginFn !== 'function') { return null }
-      return pluginFn(pluginOptions)
-    }).filter(Boolean)
-  }
-
   if (!nuxt.options.webpack.postcss || !nuxt.options.postcss) {
     return false
   }
 
-  let postcssOptions = cloneDeep(nuxt.options.postcss)
+  const postcssOptions = defu({}, nuxt.options.postcss, {
-  // Apply default plugins
+    sourceMap: nuxt.options.webpack.cssSourceMap,
-  if (isPureObject(postcssOptions)) {
+    // Array, String or Function
-    if (Array.isArray(postcssOptions.plugins)) {
+    order: 'autoprefixerAndCssnanoLast'
-      defaults(postcssOptions, defaultConfig())
+  })
-    } else {
+
   // Keep the order of default plugins
-      postcssOptions = merge({}, defaultConfig(), postcssOptions)
+  if (!Array.isArray(postcssOptions.plugins) && isPureObject(postcssOptions.plugins)) {
-      loadPlugins(postcssOptions)
+    // Map postcss plugins into instances on object mode once
+    const cjs = createCommonJS(import.meta.url)
+    postcssOptions.plugins = sortPlugins(postcssOptions).map((pluginName: string) => {
+      const pluginFn = requireModule(pluginName, { paths: [cjs.__dirname] })
+      const pluginOptions = postcssOptions.plugins[pluginName]
+      if (!pluginOptions || typeof pluginFn !== 'function') { return null }
+      return pluginFn(pluginOptions)
+    }).filter(Boolean)
   }
 
   return {
@@ -77,4 +62,3 @@ export const getPostcssConfig = (nuxt: Nuxt) => {
     postcssOptions
   }
 }
-}

pnpm-lock.yaml

@@ -744,9 +744,9 @@ importers:
       hash-sum:
         specifier: ^2.0.0
         version: 2.0.0
-      lodash-es:
+      klona:
-        specifier: ^4.17.21
+        specifier: ^2.0.6
-        version: 4.17.21
+        version: 2.0.6
       magic-string:
         specifier: ^0.30.4
         version: 0.30.4
@@ -832,9 +832,6 @@ importers:
       '@types/hash-sum':
         specifier: 1.0.0
         version: 1.0.0
-      '@types/lodash-es':
-        specifier: 4.17.9
-        version: 4.17.9
       '@types/pify':
         specifier: 5.0.2
         version: 5.0.2
@@ -1272,6 +1269,7 @@ packages:
   /@babel/highlight@7.22.20:
     resolution: {integrity: sha512-dkdMCN3py0+ksCgYmGG8jKeGA/8Tk+gJwSYYlFGxG5lmhfKNoAy004YpLxpS1W2J8m/EK2Ew+yOs9pVRwO89mg==}
     engines: {node: '>=6.9.0'}
+    requiresBuild: true
     dependencies:
       '@babel/helper-validator-identifier': 7.22.20
       chalk: 2.4.2
@@ -7994,6 +7992,7 @@ packages:
 
   /lodash-es@4.17.21:
     resolution: {integrity: sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==}
+    dev: true
 
   /lodash._reinterpolate@3.0.0:
     resolution: {integrity: sha512-xYHt68QRoYGjeeM/XOE1uJtvXQAgvszfBhjV4yvsQH0u2i9I6cI6c6/eG4Hh3UAOVn0y/xAXwmTzEay49Q//HA==}

test/basic.test.ts

@@ -271,6 +271,24 @@ describe('pages', () => {
     await expectNoClientErrors('/another-parent')
   })
 
+  it('/client-server', async () => {
+    // expect no hydration issues
+    await expectNoClientErrors('/client-server')
+    const page = await createPage('/client-server')
+    await page.waitForLoadState('networkidle')
+    const bodyHTML = await page.innerHTML('body')
+    expect(await page.locator('.placeholder-to-ensure-no-override').all()).toHaveLength(5)
+    expect(await page.locator('.server').all()).toHaveLength(0)
+    expect(await page.locator('.client-fragment-server.client').all()).toHaveLength(2)
+    expect(await page.locator('.client-fragment-server-fragment.client').all()).toHaveLength(2)
+    expect(await page.locator('.client-server.client').all()).toHaveLength(1)
+    expect(await page.locator('.client-server-fragment.client').all()).toHaveLength(1)
+    expect(await page.locator('.client-server-fragment.client').all()).toHaveLength(1)
+
+    expect(bodyHTML).not.toContain('hello')
+    expect(bodyHTML).toContain('world')
+  })
+
   it('/client-only-components', async () => {
     const html = await $fetch('/client-only-components')
     // ensure fallbacks with classes and arbitrary attributes are rendered
@@ -1907,6 +1925,12 @@ describe.skipIf(process.env.TEST_CONTEXT !== 'async')('Async context', () => {
 })
 
 describe.skipIf(isWindows)('useAsyncData', () => {
+  it('works after useNuxtData call', async () => {
+    const page = await createPage('/useAsyncData/nuxt-data')
+    expect(await page.locator('body').getByText('resolved:true').textContent()).toContain('resolved:true')
+    await page.close()
+  })
+
   it('single request resolves', async () => {
     await expectNoClientErrors('/useAsyncData/single')
   })

test/fixtures/basic-types/types.ts

@@ -406,6 +406,17 @@ describe('composables', () => {
     expectTypeOf(test).toEqualTypeOf<string | undefined>()
   })
 
+  it('allows passing reactive values in useFetch', () => {
+    useFetch('/api/hey', {
+      headers: {
+        key: ref('test')
+      },
+      query: {
+        param: computed(() => 'thing')
+      }
+    })
+  })
+
   it('correctly types returns with key signatures', () => {
     interface TestType {
       id: string

test/fixtures/basic/components/client/FragmentServer.client.vue

@@ -0,0 +1,8 @@
+<template>
+  <div class="client-fragment-server client">
+    world
+  </div>
+  <div class="client-fragment-server client">
+    world
+  </div>
+</template>

test/fixtures/basic/components/client/FragmentServer.server.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="client-fragment-server server">
+    hello
+  </div>
+</template>

test/fixtures/basic/components/client/FragmentServerFragment.client.vue

@@ -0,0 +1,8 @@
+<template>
+  <div class="client-fragment-server-fragment client">
+    world
+  </div>
+  <div class="client-fragment-server-fragment client">
+    world
+  </div>
+</template>

test/fixtures/basic/components/client/FragmentServerFragment.server.vue

@@ -0,0 +1,8 @@
+<template>
+  <div class="client-fragment-server-fragment server">
+    hello
+  </div>
+  <div class="client-fragment-server-fragment server">
+    hello
+  </div>
+</template>

test/fixtures/basic/components/client/Server.client.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="client-server client">
+    world !
+  </div>
+</template>

test/fixtures/basic/components/client/Server.server.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="client-server server">
+    hello
+  </div>
+</template>

test/fixtures/basic/components/client/ServerFragment.client.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="client-server-fragment client">
+    world
+  </div>
+</template>

test/fixtures/basic/components/client/ServerFragment.server.vue

@@ -0,0 +1,8 @@
+<template>
+  <div class="client-server-fragment server">
+    hello
+  </div>
+  <div class="client-server-fragment server">
+    hello
+  </div>
+</template>

test/fixtures/basic/pages/client-server.vue

@@ -0,0 +1,28 @@
+<template>
+  <div>
+    <div class="placeholder-to-ensure-no-override">
+      this should not be removed by hydration
+    </div>
+    <ClientFragmentServer />
+
+    <div class="placeholder-to-ensure-no-override">
+      this should not be removed by hydration
+    </div>
+    <ClientServerFragment />
+
+    <div class="placeholder-to-ensure-no-override">
+      this should not be removed by hydration
+    </div>
+    <ClientServer />
+
+    <div class="placeholder-to-ensure-no-override">
+      this should not be removed by hydration
+    </div>
+
+    <ClientFragmentServerFragment />
+
+    <div class="placeholder-to-ensure-no-override">
+      this should not be removed by hydration
+    </div>
+  </div>
+</template>

test/fixtures/basic/pages/useAsyncData/nuxt-data.vue

@@ -0,0 +1,15 @@
+<template>
+  <div
+    v-if="!pending"
+    v-text="'resolved:' + data.resolved"
+  />
+  <div
+    v-else
+    v-text="'loading'"
+  />
+</template>
+
+<script setup>
+useNuxtData('call')
+const { data, pending } = await useAsyncData('call', () => Promise.resolve({ resolved: true }), { server: false })
+</script>

test/nuxt/composables.test.ts

@@ -143,6 +143,20 @@ describe('useAsyncData', () => {
     expect(useNuxtData('key').data.value).toBeUndefined()
   })
 
+  it('should be usable _after_ a useNuxtData call', async () => {
+    useNuxtApp().payload.data.call = null
+    const { data: cachedData } = useNuxtData('call')
+    expect(cachedData.value).toMatchInlineSnapshot('null')
+    const { data } = await useAsyncData('call', () => Promise.resolve({ resolved: true }), { server: false })
+    expect(cachedData.value).toMatchInlineSnapshot(`
+      {
+        "resolved": true,
+      }
+    `)
+    expect(data.value).toEqual(cachedData.value)
+    clearNuxtData('call')
+  })
+
   it('should be refreshable', async () => {
     await useAsyncData('key', () => Promise.resolve('test'))
     clearNuxtData('key')
@@ -151,6 +165,15 @@ describe('useAsyncData', () => {
     await refreshNuxtData('key')
     expect(data.data.value).toMatchInlineSnapshot('"test"')
   })
+
+  it('allows custom access to a cache', async () => {
+    const { data } = await useAsyncData(() => ({ val: true }), { getCachedData: () => ({ val: false }) })
+    expect(data.value).toMatchInlineSnapshot(`
+      {
+        "val": false,
+      }
+    `)
+  })
 })
 
 describe('errors', () => {