webpack--删除dist目录

1、安装clean-webpack-plugin插件

npm install clean-webpack-plugin --D

2、在webpack.dev.conf.js或者webpack.config.js下引入该模块， 并在plugins中进行配置

//引入模块
const cleanWebpackPlugin = require('clean-webpack-plugin');
//在plugins中进行配置
plugins: [
    new cleanWebpackPlugin(['dist']) //清理dist文件夹
]

3、重启项目即可