@vite-pwa/create-pwa/templates/template-svelte/svelte.config.js

PWA Templates

import { vitePreprocess } from '@sveltejs/vite-plugin-svelte'

export default {
  // Consult https://svelte.dev/docs#compile-time-svelte-preprocess
  // for more information about preprocessors
  preprocess: vitePreprocess(),
}