unplugin-vue-markdown

// vite.config.ts
import Vue from '@vitejs/plugin-vue'
import Markdown from 'unplugin-vue-markdown/vite'

export default defineConfig({
  plugins: [
    Vue({
      include: [/\.vue$/, /\.md$/], // <-- allows Vue to compile Markdown files
    }),
    Markdown({ /* options */ }),
  ],
})

Example: examples/vite

// webpack.config.js
const Markdown = require('unplugin-vue-markdown/webpack')
const { VueLoaderPlugin } = require('vue-loader')

module.exports = {
  /* ... */
  module: {
    rules: [
      // ... other rules
      {
        test: /\.(vue|md)$/,
        loader: 'vue-loader'
      }
    ]
  },
  plugins: [
    new VueLoaderPlugin(),
    Markdown({ /* options */ })
  ]
}

// vue.config.js
const Markdown = require('unplugin-vue-markdown/webpack')

module.exports = {
  parallel: false, // Disable thread-loader which will cause errors, we are still investigating the root cause
  chainWebpack: (config) => {
    config.module
      .rule('vue')
      .test(/\.(vue|md)$/) // <-- allows Vue to compile Markdown files

    config
      .plugin('markdown')
      .use(Markdown({
        markdownUses: [
          prism,
        ],
      }))
  },
}

Example: examples/vue-cli