slidevjs__slidev/docs/custom/config-vue.md

Configure Vue App

Slidev uses Vue 3 to render the application on the client side. You can extend the app to add custom plugins or configurations.

Create ./setup/main.ts with the following content:

/* eslint-disable import/first */
import type { Plugin } from 'vue'

declare const YourPlugin: Plugin
// ---cut---
import { defineAppSetup } from '@slidev/types'

export default defineAppSetup(({ app, router }) => {
  // Vue App
  app.use(YourPlugin)
})

This can also be used as the main entrance of your Slidev app to do some initializations before the app starts.

Learn more: Vue Application API.