web/docs/.vitepress/theme/index.js

import DefaultTheme from 'vitepress/theme'
import './custom.css'
import 'vitepress-plugin-changelog/changelog.css'
import Changelog from 'vitepress-plugin-changelog/Changelog.vue'
import PageLayout from '../layout/PageLayout.vue'

export default {
  extends: DefaultTheme,
  Layout: PageLayout,
  async enhanceApp({ app }) {
   app.component('changelog', Changelog)
  }
}