webpack打包发布

时间 2019-11-06

标签 webpack 打包发布繁體版

原文原文链接

webpack打包发布

粗略的说明了一下打包的文件和大概的流程.css

执行npm run build开始打包html
调用build.jsvue
而后主要调用webpack.prod.conf(有其余依赖,例如webpack.base.conf)node

关于发布,就大概说了一下如何对已经进行发布的js,css,html进行一个小型服务器的发布webpack

执行node prod.server.js 启动服务器git

npm run build

执行该命令会build出相关文件,就是所谓的打包github

> node build/build.js

⠇ building for production...(node:39190) DeprecationWarning: loaderUtils.parseQuery() received a non-string value which can be problematic, see https://github.com/webpack/loader-utils/issues/56
parseQuery() will be replaced with getOptions() in the next major version of loader-utils.
⠏ building for production...
Starting to optimize CSS...
Processing static/css/app.96a4b597fd49bcceebc8ed9975532dad.css...
Processed static/css/app.96a4b597fd49bcceebc8ed9975532dad.css, before: 227144, after: 227076, ratio: 99.97%
Hash: d8fa2ea68ff7eeb5bdb1
Version: webpack 2.2.1
Time: 10500ms
                                                  Asset       Size  Chunks             Chunk Names
                  static/js/app.5136d78e51734a561a01.js    29.7 kB    0, 2  [emitted]  app
               static/js/vendor.0565b24a91810aaf3061.js     142 kB    1, 2  [emitted]  vendor
             static/js/manifest.c8353bb1e98b372587d9.js     1.5 kB       2  [emitted]  manifest
    static/css/app.96a4b597fd49bcceebc8ed9975532dad.css     227 kB    0, 2  [emitted]  app
              static/js/app.5136d78e51734a561a01.js.map     212 kB    0, 2  [emitted]  app
static/css/app.96a4b597fd49bcceebc8ed9975532dad.css.map    55.3 kB    0, 2  [emitted]  app
           static/js/vendor.0565b24a91810aaf3061.js.map    1.03 MB    1, 2  [emitted]  vendor
         static/js/manifest.c8353bb1e98b372587d9.js.map    14.1 kB       2  [emitted]  manifest
                                             index.html  616 bytes          [emitted]  
                                   static/css/reset.css     1.1 kB          [emitted]  

  Build complete.

会执行build,会产生dist目录web

dist
|-- index.html
`-- static
    |-- css
    |   |-- app.96a4b597fd49bcceebc8ed9975532dad.css
    |   |-- app.96a4b597fd49bcceebc8ed9975532dad.css.map
    |   `-- reset.css
    `-- js
        |-- app.5136d78e51734a561a01.js
        |-- app.5136d78e51734a561a01.js.map
        |-- manifest.c8353bb1e98b372587d9.js
        |-- manifest.c8353bb1e98b372587d9.js.map
        |-- vendor.0565b24a91810aaf3061.js
        `-- vendor.0565b24a91810aaf3061.js.map

build.js

目录: build/build.jsshell

require('./check-versions')();

process.env.NODE_ENV = 'production';

var ora = require('ora');
var rm = require('rimraf'); //代替物:The UNIX command rm -rf for node.
var path = require('path');
var chalk = require('chalk');
var webpack = require('webpack'); //导入webpack
var config = require('../config'); //导入config目录
var webpackConfig = require('./webpack.prod.conf'); //导入生产配置的webpack配置文件

var spinner = ora('building for production...');
spinner.start();

//每次build都删除一次dist
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
  if (err) throw err;
  //调用webpack,导入webpackConfig
  webpack(webpackConfig, function (err, stats) {
    spinner.stop();
    if (err) throw err;
    process.stdout.write(stats.toString({
        colors: true,
        modules: false,
        children: false,
        chunks: false,
        chunkModules: false
      }) + '\n\n');

    console.log(chalk.cyan('  Build complete.\n'));
    console.log(chalk.yellow(
      '  Tip: built files are meant to be served over an HTTP server.\n' +
      '  Opening index.html over file:// won\'t work.\n'
    ));
  });
});

webpack.prod.conf

目录: build/webpack.prod.conf.jsexpress

var path = require('path');
var utils = require('./utils');
var webpack = require('webpack'); 
var config = require('../config');
var merge = require('webpack-merge'); //webpack合并模块
var baseWebpackConfig = require('./webpack.base.conf'); //导入基础webpack配置文件
var CopyWebpackPlugin = require('copy-webpack-plugin');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin'); //单独提取css文件模块
var OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin');

var env = config.build.env;
//将baseWebpackConfig配置合并
var webpackConfig = merge(baseWebpackConfig, {
  module: { //增长模块处理规则
    rules: utils.styleLoaders({ //对于全部的css的loader都进行初始化配置
      sourceMap: config.build.productionSourceMap,
      extract: true
    })
  },
  devtool: config.build.productionSourceMap ? '#source-map' : false, //生成source map文件配置
  output: { //输出build生成的js文件
    path: config.build.assetsRoot,
    filename: utils.assetsPath('js/[name].[chunkhash].js'),//生成主入口文件,如app.js
    chunkFilename: utils.assetsPath('js/[id].[chunkhash].js') //生成非主入口文件,如vender.js
  },
  plugins: [
    // http://vuejs.github.io/vue-loader/en/workflow/production.html
    new webpack.DefinePlugin({ 
      'process.env': env
    }),
    new webpack.optimize.UglifyJsPlugin({ //解析/压缩/美化全部的js插件
      compress: {
        warnings: false
      },
      sourceMap: true
    }),
    // extract css into its own file
    new ExtractTextPlugin({  //抽离css而且合并到一个文件
      filename: utils.assetsPath('css/[name].[contenthash].css')
    }),
    // Compress extracted CSS. We are using this plugin so that possible
    // duplicated CSS from different components can be deduped.
    new OptimizeCSSPlugin(), //优化css
    // generate dist index.html with correct asset hash for caching.
    // you can customize output by editing /index.html
    // see https://github.com/ampedandwired/html-webpack-plugin
    new HtmlWebpackPlugin({ //生成html文件
      filename: config.build.index,
      template: 'index.html',
      inject: true,
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeAttributeQuotes: true
        // more options:
        // https://github.com/kangax/html-minifier#options-quick-reference
      },
      // necessary to consistently work with multiple chunks via CommonsChunkPlugin
      chunksSortMode: 'dependency'
    }),
    // split vendor js into its own file
    new webpack.optimize.CommonsChunkPlugin({ //抽离js中公共的部分并合并到一个文件里
      name: 'vendor',
      minChunks: function (module, count) {
        // 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
        );
      }
    }),
    // extract webpack runtime and module manifest to its own file in order to
    // prevent vendor hash from being updated whenever app bundle is updated 
    new webpack.optimize.CommonsChunkPlugin({ //每次打包可是公共js部分没变的状况下不触发更新这个公共js文件
      name: 'manifest',
      chunks: ['vendor']
    }),
    // copy custom static assets
    new CopyWebpackPlugin([//将打包后的文件复制到指定目录
      {
        from: path.resolve(__dirname, '../static'),
        to: config.build.assetsSubDirectory,
        ignore: ['.*']
      }
    ])
  ]
});

if (config.build.productionGzip) { //是否打开压缩,这是对整个打包出来的文件夹进行压缩
  var CompressionWebpackPlugin = require('compression-webpack-plugin');

  webpackConfig.plugins.push(
    new CompressionWebpackPlugin({
      asset: '[path].gz[query]',
      algorithm: 'gzip',
      test: new RegExp(
        '\\.(' +
        config.build.productionGzipExtensions.join('|') +
        ')$'
      ),
      threshold: 10240,
      minRatio: 0.8
    })
  );
}

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

module.exports = webpackConfig;

prod.server.js

目录 ./prod.server.js

var express = require('express'); //导入express

var config = require('./config/index'); //导入index.js(里面有不少配置)

var port = process.env.PORT || config.build.port; //初始化端口,端口在index.js配置

var app = express(); //实例化express

var router = express.Router(); //初始化路由

router.get('/',function (req,res,next) {
  req.url = '/index.html'; //这里访问的是发布dist/index.html
  next();
});

app.use(router);

var appData = require('./data.json'); //读取模拟的数据文件
var seller = appData.seller;
var goods = appData.goods;
var ratings = appData.ratings;

var apiRoutes = express.Router();

apiRoutes.get('/seller', function (req, res) {
  res.json({
    errno: 0,
    data: seller
  });
});

apiRoutes.get('/goods', function (req, res) {
  res.json({
    errno: 0,
    data: goods
  });
});

apiRoutes.get('/ratings', function (req, res) {
  res.json({
    errno: 0,
    data: ratings
  });
});

app.use('/api', apiRoutes);

app.use(express.static('./dist')); //使用./dist做为web目录,因此可以找到.dist/index.html

module.exports = app.listen(port, function (err) { //启动监听
  if (err) {
    console.log(err);
    return
  }
  console.log('Listening at http://localhost:' + port + '\n')
});