message: fix(@vant/area-data): only publish dist folder to npm
diff: "main": "dist/index.cjs.js",
  "module": "dist/index.esm.js",
  "types": "dist/index.d.ts",
  + "files": [
  + "dist"
  + ],
  "scripts": {
  "clean": "rimraf ./dist",
  "dev": "node ./build.js -w",
  