wordpress-plugin/packages/wordpress-plugin-lit/vite.config.js

Boilerplate WordPress Plugin structure to support development of JavaScript frameworks: React, Vue, Vanilla, TypeScript, supporting Vite, NextJS, Nuxt, Gatsby, and JSX/TSX Components (like MUI), CSS (like Tailwind + Unity), data APIs (like REST and GraphQ

import { defineConfig } from 'vite'

// https://vitejs.dev/config/
export default defineConfig({
  build: {
    lib: {
      entry: 'src/my-element.js',
      formats: ['es']
    },
    rollupOptions: {
      external: /^lit/
    }
  }
})