webpack3升级到4

mini-css-extract-plugin替换extract-text-webpack-plugin
修改配置
1.utils.js

注释调extract-text-webpack-plugin相关代码
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
if (options.extract) {
    //   return ExtractTextPlugin.extract({
    //     use: loaders,
    //     fallback: 'vue-style-loader'
    //   })
      return [MiniCssExtractPlugin.loader].concat(loaders)
    } else {
      return ['vue-style-loader'].concat(loaders)
    }
image.png
// const ExtractTextPlugin = require('extract-text-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
module.exports添加
    optimization: {
        splitChunks: {
          cacheGroups: {
            styles: {
              name: 'styles',
              test: /\.css$/,
              chunks: 'all',
              enforce: true
            }
          }
        }
    },
plugins里添加
new MiniCssExtractPlugin({
            filename: utils.assetsPath('css/[name].[contenthash].css'),
        }),
    ],
plugins里这几项注释
      // new webpack.optimize.ModuleConcatenationPlugin(),// xxx
        // split vendor js into its own file
        // new webpack.optimize.CommonsChunkPlugin({// xxx
        //     name: 'vendor',
        //     minChunks(module) {
        //         // any required modules inside node_modules are extracted to vendor
        //         return (
        //             module.resource &&
        //             /\.js$/.test(module.resource) &&
        //             module.resource.indexOf(
        //                 path.join(__dirname, '../node_modules')
        //             ) === 0
        //         )
        //     }
        // }),
  // new webpack.optimize.CommonsChunkPlugin({// xxx
        //     name: 'manifest',
        //     minChunks: Infinity
        // }),
// new webpack.optimize.CommonsChunkPlugin({// xxx
        //     name: 'app',
        //     async: 'vendor-async',
        //     children: true,
        //     minChunks: 3
        // }),

参考文章
https://www.jianshu.com/p/826e0e80922f(参考的依赖包)
https://www.jianshu.com/p/879517859fc3(可以解决大部分报错)
可能碰见报错

image.png

解决办法:vue-loader的版本不适配导致,原版本13升至15.7.1报这个错,后面改成14.2.2版本就好了

最终各依赖版本版本

{
  "name": "tts_evaluate",
  "version": "1.0.0",
  "description": "A Vue.js project",
  "author": "",
  "private": true,
  "scripts": {
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "build": "node build/build.js"
  },
  "dependencies": {
    "@fullcalendar/core": "^5.3.1",
    "@fullcalendar/daygrid": "^5.3.2",
    "@fullcalendar/interaction": "^5.3.1",
    "@fullcalendar/vue": "^5.3.1",
    "axios": "^0.18.0",
    "echarts": "^4.2.1",
    "element-ui": "^2.4.11",
    "jsencrypt": "^3.0.0-rc.1",
    "less": "^3.9.0",
    "less-loader": "^5.0.0",
    "qs": "^6.6.0",
    "vue": "^2.6.10",
    "vue-dompurify-html": "^2.3.0",
    "vue-router": "^3.0.1",
    "vuex": "^3.1.1",
    "wavesurfer.js": "^3.0.0"
  },
  "devDependencies": {
    "autoprefixer": "^7.1.2",
    "babel-core": "^6.22.1",
    "babel-helper-vue-jsx-merge-props": "^2.0.3",
    "babel-loader": "^7.1.1",
    "babel-plugin-syntax-dynamic-import": "^6.18.0",
    "babel-plugin-syntax-jsx": "^6.18.0",
    "babel-plugin-transform-runtime": "^6.22.0",
    "babel-plugin-transform-vue-jsx": "^3.5.0",
    "babel-preset-env": "^1.3.2",
    "babel-preset-stage-2": "^6.22.0",
    "chalk": "^2.0.1",
    "copy-webpack-plugin": "^4.0.1",
    "css-loader": "^1.0.1",
    "file-loader": "^1.1.4",
    "friendly-errors-webpack-plugin": "^1.6.1",
    "html-webpack-plugin": "^3.2.0",
    "mini-css-extract-plugin": "^0.4.0",
    "node-notifier": "^5.1.2",
    "optimize-css-assets-webpack-plugin": "^5.0.1",
    "ora": "^1.2.0",
    "portfinder": "^1.0.13",
    "postcss-import": "^11.0.0",
    "postcss-loader": "^3.0.0",
    "postcss-url": "^7.2.1",
    "rimraf": "^2.6.0",
    "semver": "^5.3.0",
    "shelljs": "^0.7.6",
    "uglifyjs-webpack-plugin": "^1.1.1",
    "url-loader": "^0.5.8",
    "vue-loader": "^14.2.2",
    "vue-style-loader": "^4.1.2",
    "vue-template-compiler": "^2.6.10",
    "webpack": "^4.39.3",
    "webpack-bundle-analyzer": "^2.9.0",
    "webpack-cli": "^3.3.8",
    "webpack-dev-server": "^3.8.0",
    "webpack-merge": "^4.1.0"
  },
  "engines": {
    "node": ">= 6.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}

项目目录结构


image.png
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