Continue with the previous one https://www.cnblogs.com/chenyingying0/p/12797474.html

Install webpack dev server

cnpm i sebpack-dev-server

Modify package.json

Because the syntax of configuring environment variables on different platforms (such as windows and mac) is different, in order to write in a way compatible with multiple platforms, it is necessary to install plug-ins to configure environment variables

cnpm i cross-env

Modify package.json again to configure environment variables

All environment variables set will be stored in the process.env object

Install an html component to output content

cnpm i html-webpack-plugin

Modify webpack.config.js

// Package front end resources
const path = require('path')
const VueLoaderPlugin = require("vue-loader/lib/plugin")
const HTMLPlugin = require("html-webpack-plugin")
const webpack = require("webpack")

// Judge whether the current environment is in the development environment
const isDev=process.env.NODE_DEV === "development"

const config = {
  target:"web",
  entry: path.join(__dirname, "src/index.js"),
  output: {
    filename: "boundle.js",
    path: path.join(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: "vue-loader",
      },
      {
        test: /\.css$/,
        use:[
          'style-loader',
          'css-loader'         
        ]
      },
      {
        test:/\.styl$/,
        use:[
          'style-loader',
          'css-loader',
          'stylus-loader'
        ]
      },
      {
        test:/\.(gif|jpg|jpeg|png|svg)$/,
        use:[
          {
            loader:'url-loader',
            options:{
              limit: 1024,// Less than 1024 revolutions base64 format
              name:'[name]-cyy.[ext]'
            }
          }
        ]
      }
    ],
  },
  plugins: [
    // Judge the current environment, which needs to be used in packaging
    new Webpack.DefinePlugin({
      'process.env':{
        NODE_ENV: isDev ? '"development"' : '"production"'
      }
    }),
    // Please make sure to introduce this plug-in!
    new VueLoaderPlugin(),
    new HTMLPlugin()
  ],
};

// When in a development environment, add additional devServer To configure
if(isDev){
  config.devServer={
    port:8000,
    host:'0.0.0.0', // Either through localhost，You can also use the Intranet ip(Easy access to other devices in the same LAN)
    overlay: {
      errors: true // All errors are displayed on the web page
    }
  }
}

module.exports = config

Run npm run build and package successfully

Run npm run dev to start the service

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