bbob/examples/svelte-vite/svelte.config.js

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(),
  compilerOptions: {
    customElement: true,
  },
};