使用webpack对节点模块进行代码拆分后,为什么浏览器显示空白页?

时间:2019-04-11 06:53:19

标签: webpack

我正在尝试通过使用webpack(特别是我的节点模块)拆分代码,并将每个模块拆分为自己的捆绑包来优化网站的速度性能。

对于我们自己的代码库来说,捆绑包分割工作得很好,但是当我分割节点模块时,浏览器显示一个空白页面,没有错误。已成功获取主捆绑包,但似乎无法正确执行。

这是我的webpack配置文件:

var webpack = require('webpack');
var path = require('path');
const UglifyJSPlugin = require('uglifyjs-webpack-plugin')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const CompressionPlugin = require('compression-webpack-plugin');

var BUILD_DIR = path.resolve(__dirname, 'static/public/js');
var APP_DIR = path.resolve(__dirname, 'static/js');
var CSS_DIR = path.resolve(APP_DIR, 'css');

var config_function = function(env){
  var config = {
    mode: env && env.prod ? 'production':'development',
    entry: ['babel-polyfill', APP_DIR + '/index.js'],
    output: {
      path: BUILD_DIR,
      filename: env && env.prod ? '[name].bundle.min.js' : '[name].bundle.js',
      publicPath: '/static/js/'
    },
    optimization: {
        runtimeChunk: 'single',
        splitChunks: {
            chunks: 'all',
            maxInitialRequests: Infinity,
            minSize: 0,
            cacheGroups:{
                vendor: {
                    test: /[\\/]node_modules[\\/]/,
                    name(module) {
                        const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1];
                        return `npm.${packageName.replace('@', '')}`;
                    },
                }
            }
        }
    },
    plugins: env && env.prod ? [
        new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
        new webpack.DefinePlugin({
             'process.env.NODE_ENV': '"production"'
         }),
        new UglifyJSPlugin({uglifyOptions:{
            ecma: 5,
            mangle: {
                safari10: true
            },
            warnings: false,
            screw_ie8: true,
            compress: true,
        }}),
        new CompressionPlugin({
            algorithm: 'gzip',
            minRatio: 1})
    ]: [
        new BundleAnalyzerPlugin(),
    ],
    module: {
      rules: [{
        test: /\.jsx?/,
        include: [APP_DIR, /node_modules\/snakecase-keys/, /node_modules\/redux-api-middleware/,/node_modules\/map-obj/, /node_modules\/hare-niemeyer/, /node_modules\/round-to/, /node_modules\/styled-components/],
        loader: 'babel-loader',
        query: {
          presets: ['es2015', 'react', 'stage-2'], //, 'react-hmre']
          plugins: ['recharts']
        }
      }, {
        test: /\.scss$/,
        loaders: ['style-loader', 'css-loader', 'sass-loader']
      }, {
        test: /\.json$/,
        loader: 'json-loader',
        type: 'javascript/auto'
      }, {
        test: /\.less$/,
        include: CSS_DIR,
        loaders: ['style-loader', 'css-loader', 'less-loader']
      }, {
          test: /\.css$/,
          loaders: ['style-loader', 'css-loader']
      }, {
          test: /\.(png|jpg)$/,
          loader: 'url-loader'
      },
    ]
    }
  };

  return config;
}

module.exports = config_function;

代码拆分看起来完全符合我的预期:每个npm软件包都有自己的捆绑包,其余代码也可以成功拆分。但是,它只是没有按预期执行(即,无错误的空白页)。

1 个答案:

答案 0 :(得分:0)

我误解了这项技术,并认为运行时捆绑包负责动态获取各个npm模块。

必须通过index.html文件中的脚本来获取每个npm模块,以使其正常工作。