entry.server.js
is the same as entry.client.js
// main.js
import Vue from 'vue'
// Not required tho.
const options = {}
const renderer = new Renderer({
...options,
// SSR status to `true`.
ssr: true
})
// if Options API.
Vue.mixin(renderer.mixin)
// For Vue 3:
// createApp(App).mixin(stylesRenderer.mixin).mount('#app')
Then just put renderer.style
into your template.