Extending Layout.vue can't resolve '@AlgoliaSearchBox'

• I confirm that this is an issue rather than a question.

Bug report

Version

1.0.0-alpha.47

Steps to reproduce

What is expected?

1. Create a Layout that extends @vuepress/theme-default/layouts/Layout.vue
   CustomLayout.vue

<script>
import Layout from "@vuepress/theme-default/layouts/Layout.vue";

export default {
  extends: Layout
}
</script>

1. Use Layout index.md

---
layout: CustomLayout
---

What is actually happening?

Can’t resolve @AlgoliaSearchBox

./docs/.vuepress/theme/components/Navbar.vue?vue&type=script&lang=js& (./node_modules/cache-loader/dist/cjs.js??ref--3-0!./node_modules/babel-loader/lib??ref--3-1!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./docs/.vuepress/theme/components/Navbar.vue?vue&type=script&lang=js&)
Module not found: Error: Can't resolve '@AlgoliaSearchBox' in '/vuepress/docs/.vuepress/theme/components'

I had the same problem with @Searchboxbut i fixed it with plugin @vuepress/plugin-search

Need to install a plugin for @AlgoliaSearchBox ?

Other relevant information

• Your OS: MacOs Mojave
• Node.js version: 8.9.4
• Browser version: Chrome
• Is this a global or local install? local
• Which package manager did you use for the install? npm
• Does this issue occur when all plugins are disabled? Yes

[imaegoo]

Change

import Layout from "@vuepress/theme-default/layouts/Layout.vue";

to

import Layout from "@parent-theme/layouts/Layout.vue";

Define parent theme in .vuepress/theme/index.js

module.exports = {
  extend: '@vuepress/theme-default'
}

Works for me.

[imaegoo]

Same here. Was there a solution?