###创建项目
npm init
npm install webpack@4.43.0 webpack-cli -D
"build": "npx webpack --config webpack.config.js"
npm run build
npm config set registry https://registry.npmjs.org/
###登录 npm
npm login
npm publish
npm unpublish name@version
###更新npm包,修改package.json的version版本号,重新打包发布
npm i js-util-plugin -D
import jsUtilsPlugin from 'js-util-plugin'