webpack 打包 4.x extract-text-webp

image.png
问题：Use Chunks.groupsIterable and filter by instanceof Entrypoint instead
npm i -D extract-text-webpack-plugin@next
https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/760 image.png
问题：[contentHash:8] not implemented in this context: styles.[contentHash:8].css
https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/763

    config.plugins.push(
        new ExtractPlugin('styles.[md5:contenthash:hex:20].css')
    )

问题：webpack.optimize.CommonsChunkPlugin has been removed, please use config.optimization.splitChunks instead.
目前，4.0中已经删除CommonsChunkPlugin，替换成了splitChunks，这里有相关介绍内容
解决方案： 去除 new webpack.optimize.CommonsChunkPlugin，修改为

optimization: {
    runtimeChunk: {
        name: "manifest"
    },
    splitChunks: {
        cacheGroups: {
            commons: {
                test: /[\\/]node_modules[\\/]/,
                name: "vendor",
                chunks: "all"
            }
        }
    }
}

optimization参数介绍：

optimization: {
    splitChunks: {
      chunks: "initial",         // 必须三选一： "initial" | "all"(默认就是all) | "async"
      minSize: 0,                // 最小尺寸，默认0
      minChunks: 1,              // 最小 chunk ，默认1
      maxAsyncRequests: 1,       // 最大异步请求数， 默认1
      maxInitialRequests: 1,    // 最大初始化请求书，默认1
      name: () => {},              // 名称，此选项课接收 function
      cacheGroups: {                 // 这里开始设置缓存的 chunks
        priority: "0",                // 缓存组优先级 false | object |
        vendor: {                   // key 为entry中定义的 入口名称
          chunks: "initial",        // 必须三选一： "initial" | "all" | "async"(默认就是异步)
          test: /react|lodash/,     // 正则规则验证，如果符合就提取 chunk
          name: "vendor",           // 要缓存的 分隔出来的 chunk 名称
          minSize: 0,
          minChunks: 1,
          enforce: true,
          maxAsyncRequests: 1,       // 最大异步请求数， 默认1
          maxInitialRequests: 1,    // 最大初始化请求书，默认1
          reuseExistingChunk: true   // 可设置是否重用该chunk（查看源码没有发现默认值）
        }
      }
    }
  },

https://gist.github.com/sokra/1522d586b8e5c0f5072d7565c2bee693?utm_source=aotu_io&utm_medium=liteo2_web

webpack dev\build 打包配置

const path = require('path');
const HTMLPlugin = require('html-webpack-plugin');
const VueLoaderPlugin = require('vue-loader/lib/plugin');
const webpack = require('webpack');
const ExtractPlugin = require('extract-text-webpack-plugin');

const isDev = process.env.NODE_ENV === 'development'

const config = {
    mode: 'development',
    target: "web",
    entry: {
        app:path.join(__dirname, "src/index.js"),
    },
    output: {
        filename: 'bundle.[hash:8].js',
        path: path.join(__dirname, 'dist')
    },
    plugins: [
        new webpack.DefinePlugin({
            'process.env': {
                NODE_ENV: isDev ? '"development"' : '"production"'
            }
        }),
        new VueLoaderPlugin(),
        new HTMLPlugin()
    ],
    optimization: {
        runtimeChunk: {
            name: "runtime"
        },
        splitChunks: {
            name: "vendor"
        }
    },
    module: {
        rules: [
            {
                test: /\.vue$/,
                loader: 'vue-loader',
            },
            {
                test: /\.jsx$/,
                loader: 'babel-loader',
            },
            {
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            },
            {
                test: /\.(gif|jpg|jpeg|png|svg)$/,
                use: {
                    loader: 'url-loader',
                    options: {
                        limit: 1024,
                        name: '[name].[ext]'
                    }
                }
            }
        ]
    }
}

if (isDev) {
    config.module.rules.push({
        test: /\.styl/,
        use: [
            'style-loader',
            'css-loader',
            {
                loader: 'postcss-loader',
                options: {
                    sourseMap: true,
                }
            },
            'stylus-loader'
        ]
    })
    config.devtool = '#cheap-module-eval-source-map',
    config.devServer = {
        port: 8000,
        host: '0.0.0.0',
        overlay: {
            errors: true
        },
        hot: true,  // 热更新
        // historyFallback: {
        // }
        // open: true
    },
    config.plugins.push(
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoEmitOnErrorsPlugin()
    )
} else {
    config.entry = {
        app: path.join(__dirname, "src/index.js"),
        vendor: ['vue']
    }
    config.output.filename = '[name].[chunkhash:8].js'
    config.module.rules.push(
        {
            test: /\.styl/,
            use: ExtractPlugin.extract({
                fallback: 'style-loader',
                use: [
                    'css-loader',
                    {
                        loader: 'postcss-loader',
                        options: {
                            sourseMap: true,
                        }
                    },
                    'stylus-loader'
                ]
            })
        }
    )
    config.plugins.push(
        new ExtractPlugin('styles.[md5:contenthash:hex:20].css'),
    )
}

module.exports = config