fix(vue-app): missing layout in error page with splittedChunks.layout (#8016)

packages/vue-app/template/App.js

@@ -129,11 +129,9 @@ export default {
     <% } %>
   },
   <% } %>
-  <% if (loading) { %>
   watch: {
     'nuxt.err': 'errorChanged'
   },
-  <% } %>
   <% if (features.clientOnline) { %>
   computed: {
     isOffline () {
@@ -215,9 +213,10 @@ export default {
       <% if (loading) { %>this.$loading.finish()<% } %>
       <% } %>
     },
+    <% if (splitChunks.layouts) { %>async <% } %>errorChanged () {
+      if (this.nuxt.err) {
         <% if (loading) { %>
-    errorChanged () {
+        if (this.$loading) {
-      if (this.nuxt.err && this.$loading) {
           if (this.$loading.fail) {
             this.$loading.fail(this.nuxt.err)
           }
@@ -225,8 +224,18 @@ export default {
             this.$loading.finish()
           }
         }
-    },
         <% } %>
+        let errorLayout = (NuxtError.options || NuxtError).layout;
+
+        if (typeof errorLayout === 'function') {
+          errorLayout = errorLayout(this.context)
+        }
+        <% if (splitChunks.layouts) { %>
+        await this.loadLayout(errorLayout)
+        <% } %>
+        this.setLayout(errorLayout)
+      }
+    },
     <% if (features.layouts) { %>
     <% if (splitChunks.layouts) { %>
     setLayout (layout) {

packages/vue-app/template/client.js

@@ -613,7 +613,7 @@ function normalizeComponents (to, ___) {
 }
 
 <% if (features.layouts) { %>
-function setLayoutForNextPage (to) {
+<% if (splitChunks.layouts) { %>async <% } %>function setLayoutForNextPage (to) {
   // Set layout
   let hasError = Boolean(this.$options.nuxt.err)
   if (this._hadError && this._dateLastError === this.$options.nuxt.dateErr) {
@@ -626,6 +626,9 @@ function setLayoutForNextPage (to) {
   if (typeof layout === 'function') {
     layout = layout(app.context)
   }
+  <% if (splitChunks.layouts) { %>
+  await this.loadLayout(layout)
+  <% } %>
   this.setLayout(layout)
 }
 <% } %>

test/dev/unicode-base.size-limit.test.js

@@ -20,7 +20,7 @@ describe('nuxt minimal vue-app bundle size limit', () => {
   it('should stay within the size limit range', async () => {
     const filter = filename => filename === 'vue-app.nuxt.js'
     const legacyResourcesSize = await getResourcesSize(distDir, 'client', { filter })
-    const LEGACY_JS_RESOURCES_KB_SIZE = 16.6
+    const LEGACY_JS_RESOURCES_KB_SIZE = 17.1
     expect(legacyResourcesSize.uncompressed).toBeWithinSize(LEGACY_JS_RESOURCES_KB_SIZE)
   })
 })

test/e2e/error.test.js

@@ -42,6 +42,16 @@ describe('basic browser', () => {
     expect(await page.$text('h1')).toBe('About')
   })
 
+  test('/about error layout after click', async () => {
+    const transitionPromise = page.evaluate(async ($nuxt) => {
+      await new Promise(resolve => $nuxt.$once('triggerScroll', resolve))
+    }, page.$nuxt)
+
+    await page.click('button')
+    await transitionPromise
+    expect(await page.$text('header')).toBe('Error layout')
+  })
+
   test('/info prints empty page', async () => {
     await page.nuxt.navigate('/info')
 

test/e2e/split-layouts-error.test.js

@@ -0,0 +1,51 @@
+import Browser from '../utils/browser'
+import { loadFixture, getPort, Nuxt } from '../utils'
+
+let port
+const browser = new Browser()
+const url = route => 'http://localhost:' + port + route
+
+let nuxt = null
+let page = null
+
+describe('split layouts error layout', () => {
+  beforeAll(async () => {
+    const config = await loadFixture('split-layouts-error')
+    nuxt = new Nuxt(config)
+    await nuxt.ready()
+
+    port = await getPort()
+    await nuxt.server.listen(port, 'localhost')
+    await browser.start()
+    page = await browser.page(url('/'))
+  })
+
+  test('Open /', async () => {
+    expect(await page.$text('h1')).toBe('Error Loop incoming page')
+  })
+
+  test('/info has error layout', async () => {
+    await page.nuxt.navigate('/info')
+
+    const transitionPromise = page.evaluate(async ($nuxt) => {
+      await new Promise(resolve => $nuxt.$once('triggerScroll', resolve))
+    }, page.$nuxt)
+    await page.click('button')
+
+    await transitionPromise
+
+    expect(await page.$text('header')).toBe('Error layout')
+  })
+
+  test('/error has error layout after router push', async () => {
+    await page.nuxt.navigate('/error')
+
+    expect(await page.$text('header')).toBe('Error layout')
+  })
+
+  test('/error has error layout after page load', async () => {
+    const localPage = await browser.page(url('/error'))
+
+    expect(await localPage.$text('header')).toBe('Error layout')
+  })
+})

test/fixtures/error/pages/about.vue

@@ -1,8 +1,24 @@
 <template>
   <div>
     <h1>About</h1>
+    <button
+      type="button"
+      @click="onClick"
+    >
+      error click
+    </button>
     <nuxt-link to="/">
       back
     </nuxt-link>
   </div>
 </template>
+
+<script>
+export default {
+  methods: {
+    onClick () {
+      this.$nuxt.context.error(new Error('test error'))
+    }
+  }
+}
+</script>

test/fixtures/split-layouts-error/layouts/error-layout.vue

@@ -0,0 +1,12 @@
+<template>
+  <div>
+    <header>Error layout</header>
+    <nuxt />
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'ErrorLayout'
+}
+</script>

test/fixtures/split-layouts-error/layouts/error.vue

@@ -0,0 +1,18 @@
+<template>
+  <div>
+    <h1>Error</h1>
+    <p>Details: {{ this.$route.path === '/squared' ? error.response.data : error.message }}</p>
+
+    <nuxt-link to="/">
+      back
+    </nuxt-link>
+  </div>
+</template>
+
+<script>
+export default {
+  layout: 'error-layout',
+  // eslint-disable-next-line vue/require-prop-types
+  props: ['error']
+}
+</script>

test/fixtures/split-layouts-error/nuxt.config.js

@@ -0,0 +1,7 @@
+export default {
+  build: {
+    splitChunks: {
+      layouts: true
+    }
+  }
+}

test/fixtures/split-layouts-error/pages/about.vue

@@ -0,0 +1,8 @@
+<template>
+  <div>
+    <h1>About</h1>
+    <nuxt-link to="/">
+      back
+    </nuxt-link>
+  </div>
+</template>

test/fixtures/split-layouts-error/pages/error.vue

@@ -0,0 +1,12 @@
+<template>
+  <h1>Error page</h1>
+</template>
+
+<script>
+/* eslint no-undef: 0 */
+export default {
+  asyncData ({ error }) {
+    error(new Error('test error'))
+  }
+}
+</script>

test/fixtures/split-layouts-error/pages/index.vue

@@ -0,0 +1,14 @@
+<template>
+  <div>
+    <h1>Error Loop incoming page</h1>
+    <nuxt-link id="error" to="/error">
+      Error during error
+    </nuxt-link>
+    <nuxt-link id="about" to="/about">
+      About
+    </nuxt-link>
+    <nuxt-link id="info" to="/info">
+      Info (with error)
+    </nuxt-link>
+  </div>
+</template>

test/fixtures/split-layouts-error/pages/info.vue

@@ -0,0 +1,24 @@
+<template>
+  <div>
+    <h1>Info</h1>
+    <button
+      type="button"
+      @click="onClick"
+    >
+      click me
+    </button>
+    <nuxt-link to="/">
+      back
+    </nuxt-link>
+  </div>
+</template>
+
+<script>
+export default {
+  methods: {
+    onClick () {
+      this.$nuxt.context.error(new Error('test error'))
+    }
+  }
+}
+</script>

test/fixtures/split-layouts-error/split-layouts-error.test.js

@@ -0,0 +1,3 @@
+import { buildFixture } from '../../utils/build'
+
+buildFixture('split-layouts-error')