vuecli2.x webpack3.x升级webpack5.37.0

Posted 2021-06-03 Samsara315

随着项目的页面越来越多体积越来越大，dev构建速度和pro打包速度越来越慢，然后就抽时间对项目进行了webpack升级来提升一下速度
升级过程中遇到了很多的坑，基本都是plugin和loader升级后的一些用法问题，花了一个晚上和一个上午时间，过程很痛苦，但是看到
速度的大幅度提示，还是很开心的
先上图看一下对比效果
webpack3 dev构建

webpack3 pro打包

webpack5 dev构建 提升60%

webpack5 pro 构建 提升23%

看的处理效果还是很不错的

1.首先是对webpack进行升级，升级后的版本如图

升级后一些用法发生了改变
webpack-merge的变化

dev启动命令变化

2.由于wepback的升级造成了其他一些插件或者loader的不能正常使用，索性使用yarn upgrade-interactive --latest升级了所有的依赖包
3.升级后报错babel-core6.x的版本需要使用babel-loader7的版本然后重新安装yarn add -D babel-loader@7
4.安装mini-css-extract-plugin替换extract-text-webpack-plugin
webpack.base.config.js

\'use strict\'
const path = require(\'path\')
const utils = require(\'./utils\')
const config = require(\'../config\')
const { VueLoaderPlugin } = require(\'vue-loader\')

function resolve(dir) {
    return path.join(__dirname, \'..\', dir)
}



module.exports = {
    devtool:\'eval-source-map\',
    context: path.resolve(__dirname, \'../\'),
    entry: {
        app: \'./src/main.js\'
    },
    output: {
        path: config.build.assetsRoot,
        filename: \'[name].js\',
        publicPath: process.env.NODE_ENV === \'production\' ?
            config.build.assetsPublicPath : config.dev.assetsPublicPath
    },
    resolve: {
        extensions: [\'.js\', \'.vue\', \'.json\'],
        alias: {
            \'vue$\': \'vue/dist/vue.esm.js\',
            \'@\': resolve(\'src\'),
        }
    },
    module: {
        rules: [{
            test: /\\.vue$/,
            use: {
                loader: \'vue-loader\'
            }
        },
        {
            test: /\\.js$/,
            use: {
                loader: \'babel-loader\'
            },
            exclude: resolve(\'node_modules\'),
            include: resolve(\'src\')
        },
        {
            test: /\\.(png|jpe?g|gif|svg)(\\?.*)?$/,
            type: \'asset\',
            parser: {
                dataUrlCondition: {
                    maxSize: 10 * 1024 // 10kb
                }
            },
            generator: {
                filename: utils.assetsPath(\'img/[name].[hash:7].[ext]\')
            }
        },
        {
            test: /\\.(mp4|webm|ogg|mp3|wav|flac|aac)(\\?.*)?$/,
            loader: \'url-loader\',
            options: {
                limit: 10000,
                name: utils.assetsPath(\'media/[name].[hash:7].[ext]\')
            }
        },
        {
            test: /\\.(woff2?|eot|ttf|otf)(\\?.*)?$/,
            loader: \'url-loader\',
            options: {
                limit: 10000,
                name: utils.assetsPath(\'fonts/[name].[hash:7].[ext]\'),
                publicPath: \'../../\'
            }
        }]
    },
    node: {
        global: false
    },
    plugins: [
        new VueLoaderPlugin()
    ]
}

utils.js

\'use strict\'
const path = require(\'path\')
const config = require(\'../config\')
const MiniCssExtractPlugin = require("mini-css-extract-plugin")
const packageConfig = require(\'../package.json\')

exports.assetsPath = function (_path) {
  const assetsSubDirectory = process.env.NODE_ENV === \'production\'
    ? config.build.assetsSubDirectory
    : config.dev.assetsSubDirectory

  return path.posix.join(assetsSubDirectory, _path)
}

exports.cssLoaders = function (options) {
  options = options || {}

  const cssLoader = {
    loader: \'css-loader\',
    options: {
      sourceMap: options.sourceMap
    }
  }

  const postcssLoader = {
    loader: \'postcss-loader\',
    options: {
      sourceMap: options.sourceMap
    }
  }

  // generate loader string to be used with extract text plugin
  function generateLoaders(loader, loaderOptions) {
    const loaders = options.usePostCSS ? [cssLoader, postcssLoader] : [cssLoader]

    if (loader) {
      loaders.push({
        loader: loader + \'-loader\',
        options: Object.assign({}, loaderOptions, {
          sourceMap: options.sourceMap
        })
      })
    }

    // Extract CSS when that option is specified
    // (which is the case during production build)
    if (options.extract) {
      return [
        {
          loader: MiniCssExtractPlugin.loader,
          options: {
            publicPath: \'../../\' //修改路径处理图片路径错误
          }
        }
      ].concat(loaders)
    } else {
      return [
        {
          loader: \'vue-style-loader\'
        }
      ].concat(loaders)
    }
  }

  // https://vue-loader.vuejs.org/en/configurations/extract-css.html
  return {
    css: generateLoaders(),
    postcss: generateLoaders(),
    less: generateLoaders(\'less\'),
    // sass: generateLoaders(\'sass\', { indentedSyntax: true }),
    // scss: generateLoaders(\'sass\'),
    // stylus: generateLoaders(\'stylus\'),
    // styl: generateLoaders(\'stylus\')
  }
}

// Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function (options) {
  const output = []
  const loaders = exports.cssLoaders(options)

  for (const extension in loaders) {
    const loader = loaders[extension]
    output.push({
      test: new RegExp(\'\\\\.\' + extension + \'$\'),
      use: loader
    })
  }

  return output
}

exports.createNotifierCallback = () => {
  const notifier = require(\'node-notifier\')

  return (severity, errors) => {
    if (severity !== \'error\') return

    const error = errors[0]
    const filename = error.file && error.file.split(\'!\').pop()

    notifier.notify({
      title: packageConfig.name,
      message: severity + \': \' + error.name,
      subtitle: filename || \'\',
      icon: path.join(__dirname, \'logo.png\')
    })
  }
}

webpack.dev.conf.js

\'use strict\'
const utils = require(\'./utils\')
const webpack = require(\'webpack\')
const config = require(\'../config\')
const { merge } = require(\'webpack-merge\')
const path = require(\'path\')
const baseWebpackConfig = require(\'./webpack.base.conf\')
const CopyWebpackPlugin = require(\'copy-webpack-plugin\')
const HtmlWebpackPlugin = require(\'html-webpack-plugin\')
const FriendlyErrorsPlugin = require(\'friendly-errors-webpack-plugin\')
const portfinder = require(\'portfinder\')

const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)

const devWebpackConfig = merge(baseWebpackConfig, {
	mode: \'development\',
	module: {
		rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
	},
	// cheap-module-eval-source-map is faster for development
	devtool: config.dev.devtool,

	// these devServer options should be customized in /config/index.js
	devServer: {
		clientLogLevel: \'warning\',
		historyApiFallback: {
			rewrites: [
				{ from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, \'index.html\') },
			],
		},
		hot: true,
		contentBase: false, // since we use CopyWebpackPlugin.
		compress: true,
		host: HOST || config.dev.host,
		port: PORT || config.dev.port,
		open: config.dev.autoOpenBrowser,
		overlay: config.dev.errorOverlay ? { warnings: false, errors: true } : false,
		publicPath: config.dev.assetsPublicPath,
		proxy: config.dev.proxyTable,
		quiet: true, // necessary for FriendlyErrorsPlugin
		watchOptions: {
			poll: config.dev.poll,
		}
	},
	plugins: [
		new webpack.DefinePlugin({
			\'process.env\': require(\'../config/dev.env\'),
			BASEURL: \'"//test.com"\', 
		}),
		new webpack.HotModuleReplacementPlugin(),
		// new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
		// new webpack.NoEmitOnErrorsPlugin(),
		// https://github.com/ampedandwired/html-webpack-plugin
		new HtmlWebpackPlugin({
			filename: \'index.html\',
			template: \'index.html\',
			inject: true,
			chunkSortMode: \'auto\'
		}),
		// copy custom static assets
		new CopyWebpackPlugin({
			patterns: [
				{
					from: path.resolve(__dirname, \'../static\'),
					to: config.dev.assetsSubDirectory,
					globOptions: {
						dot: true,
						gitignore: true,
						ignore: [\'.*\'],
					}
				},
			]
		})
	]
})

module.exports = new Promise((resolve, reject) => {
	portfinder.basePort = process.env.PORT || config.dev.port
	portfinder.getPort((err, port) => {
		if (err) {
			reject(err)
		} else {
			// publish the new Port, necessary for e2e tests
			process.env.PORT = port
			// add port to devServer config
			devWebpackConfig.devServer.port = port

			// Add FriendlyErrorsPlugin
			devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
				compilationSuccessInfo: {
					messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
				},
				onErrors: config.dev.notifyOnErrors ?
					utils.createNotifierCallback() : undefined
			}))

			resolve(devWebpackConfig)
		}
	})
})

webpack.prod.conf.js

\'use strict\'
const path = require(\'path\')
const utils = require(\'./utils\')
const webpack = require(\'webpack\')
const config = require(\'../config\')
const { merge } = require(\'webpack-merge\')
const baseWebpackConfig = require(\'./webpack.base.conf\')
const CopyWebpackPlugin = require(\'copy-webpack-plugin\')
const HtmlWebpackPlugin = require(\'html-webpack-plugin\')
const MiniCssExtractPlugin = require("mini-css-extract-plugin")
const TerserWebpackPlugin = require(\'terser-webpack-plugin\')
const OptimizeCSSPlugin = require(\'optimize-css-assets-webpack-plugin\')

const env = require(\'../config/prod.env\')
let envOptions = {}
if (process.env.BUILD_ENV === "production") {
  envOptions = {
    \'BASEURL\': \'"//test.com"\',
  }
} else {
  envOptions = {
    \'BASEURL\': \'"//test.com"\',  
  }
}

const webpackConfig = merge(baseWebpackConfig, {
  mode: \'production\',
  module: {
    rules: utils.styleLoaders({
      sourceMap: config.build.productionSourceMap,
      extract: true,
      usePostCSS: true
    })
  },
  devtool: config.build.productionSourceMap ? config.build.devtool : false,
  output: {
    path: config.build.assetsRoot,
    filename: utils.assetsPath(\'js/[name].[hash:7].js\'),
    chunkFilename: utils.assetsPath(\'js/[name].[hash:7].js\'),
    clean: true
  },

  optimization: {
    minimize: true,
    minimizer: [
      new TerserWebpackPlugin(),
      new OptimizeCSSPlugin(),
    ],
    runtimeChunk: { name: \'runtime\' },
    concatenateModules: true,
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /[\\\\/]node_modules[\\\\/]/,
          name: \'vendor\',
          chunks: \'all\',
          priority: -10
        },
        \'async-vendors\': {
          test: /[\\\\/]node_modules[\\\\/]/,
          minChunks: 2,
          chunks: \'async\',
          name: \'async-vendors\'
        }
      },
    },
    moduleIds: \'deterministic\'
  },
  plugins: [
    // http://vuejs.github.io/vue-loader/en/workflow/production.html
    new webpack.DefinePlugin({
      \'process.env\': env,
      ...envOptions,
    }),
    new MiniCssExtractPlugin({
      filename: utils.assetsPath(\'css/[name].[contenthash].css\'),
      chunkFilename: utils.assetsPath(\'css/[name].[contenthash].css\')
    }),
    new HtmlWebpackPlugin({
      filename: config.build.index,
      template: \'index.html\',
      inject: true,
      scriptLoading: \'blocking\',
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeAttributeQuotes: true
      },
      chunksSortMode: \'auto\'
    }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: path.resolve(__dirname, \'../static\'),
          to: config.build.assetsSubDirectory,
          globOptions: {
            dot: true,
            gitignore: true,
            ignore: [\'.*\'],
          }
        },
      ]
    })
  ]
})

if (config.build.productionGzip) {
  const CompressionWebpackPlugin = require(\'compression-webpack-plugin\');
  webpackConfig.plugins.push(
    new CompressionWebpackPlugin({
      filename: \'[path][base].gz[query]\',
      algorithm: \'gzip\',
      test: /\\.(js|css|json|txt|html|ico|svg)(\\?.*)?$/i,
      threshold: 10240,
      minRatio: 0.8,
      deleteOriginalAssets: false//保留源文件
    })
  )
}

if (config.build.bundleAnalyzerReport) {
  const BundleAnalyzerPlugin = require(\'webpack-bundle-analyzer\').BundleAnalyzerPlugin
  webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}

module.exports = webpackConfig