App.html

<div>hello {name}</div>

<script>
  export default {
    data() {
      return {
        name: 'egoist'
      }
    }
  }
</script>

index.js

import App from './App.html'

new App({
  target: document.body
})

package.json

{
  "name": "xxx",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "devDependencies": {
    "@poi/plugin-svelte": "^11.0.0",
    "poi": "^10.1.2"
  }
}

poi.config.js

module.exports = {
  plugins: [
    require('@poi/plugin-svelte')()
  ]
}