message: run dist prebuild, include css.js
diff: "module": "dist/index.esm.js",
  "scripts": {
  "dev": "next dev",
  + "prebuild": "npm run dist",
  "build": "next build",
  "start": "next start",
  "predist": "rm -rf dist",
  "design-system"
  ],
  "files": [
  + "css.js",
  "dist",
  "src",
  "!src/__tests__",
  