message: build selianize post install automatically
diff: "module": "dist/selianize.esm.js",
  "scripts": {
  "build": "rollup -c",
  - "dev": "rollup -c -w"
  + "dev": "rollup -c -w",
  + "postinstall": "yarn build"
  },
  "engines": {
  "node": ">=6"
  