HtmlWebpackPlugin does not include vendor.js

Question

I am trying to improve the loading speed of our website. So I have been putting my hands into our webpack.config.

After several modification I now get the modules separated and hashed properly. I am also using HtmlWebpackPlugin to automatically generate the index.html from out template.

But I got a couple of other issues appearing as well.

vendor.js is not added automatically to the template. Only the chunk-manifest.json and index.[hash].js are added automatically. If I try to load directly like that I get a

Uncaught ReferenceError: webpackJsonp is not defined

After adding vendor.js manually I get the following error:

Uncaught ReferenceError: regeneratorRuntime is not defined

This is the webpack.config:

const webpack = require('webpack');
const path = require('path');

const HtmlWebpackPlugin = require('html-webpack-plugin');
const ChunkManifestPlugin = require('chunk-manifest-webpack-plugin');
const WebpackChunkHash = require('webpack-chunk-hash');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

/* Shared Dev & Production */

const config = {
  context: path.resolve(__dirname, 'src'),

  entry: {
    index: './index.js',
    vendor: ['react', 'react-dom', 'react-router', 'react-redux', 'history', 'react-router-dom', 'redux', 'react-router-redux', 'redux-form', 'lodash'],
  },

  module: {
    rules: [
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.(ico|jpg|png|gif|eot|otf|webp|svg|ttf|woff|woff2)(\?.*)?$/,
        exclude: //favicon.ico$/,
        use: [
        {
            loader: 'file-loader',
            query: {
              name: '[path][name][hash].[ext]',
              publicPath: '/'
            }
        }
        ]
      },
      {
        test: /\.css$/,
        include: path.join(__dirname, 'src/style'),
        use: [
          'style-loader',
          'css-loader'
        ]
      },
      {
        test: /\.(ico)(\?.*)?$/,
        exclude: /node_modules/,
        use: {
          loader: 'file-loader',
          options: { name: '[name].[ext]' },
        },
      },
      {
        test: /\.xml/,
        use: {
          loader: 'file-loader',
          options: { name: '[name].[ext]' },
        },
      },
    ],
  },

  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].bundle.js',
    publicPath: '/',
  },

  resolve: {
    extensions: ['.js'],
    modules: [path.resolve(__dirname, 'src'), 'node_modules'],
  },

  plugins: [
    // New moment.js optimization
    new webpack.ContextReplacementPlugin(/moment[/\]locale$/, /en/),

    new webpack.optimize.CommonsChunkPlugin({
            names: ['vendor'],
            filename: '[name].js',
            minChunks: Infinity
        }),

    new webpack.optimize.ModuleConcatenationPlugin(),

    new HtmlWebpackPlugin({
      appMountId: 'app-root',
      inlineManifestWebpackName: 'webpackManifest',
      template: 'templateIndex.html',
      title: 'Our Site',
    }),
  ],

  devServer: {
    historyApiFallback: true,
  },
};

//if (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'test') {
  config.plugins = [
    ...config.plugins,
    new BundleAnalyzerPlugin({analyzerMode: 'static'}),
  ];
//}

//if (process.env.NODE_ENV === 'production') {
  config.output.filename = '[name].[chunkhash].js';
  config.plugins = [
    ...config.plugins,
    new webpack.HashedModuleIdsPlugin(),
    new WebpackChunkHash(),
    new ChunkManifestPlugin({
      filename: 'chunk-manifest.json',
      manifestVariable: 'webpackManifest',
      inlineManifest: true,
    }),
  ];
//}

module.exports = config;

At this point I am not sure what is wrong with the webpack.config.

How can I get the vendor.js to be automatically added?

This is the template:





  
  

  Our Site

This is the .babelrc (I think the regeneratorRuntime is related to it, just need to figure out how)

{
  "presets": [
    [
      "env",
      { "modules": false }
    ],
    "react",
    "stage-0",
    "stage-2"
  ],
  "plugins": [ "syntax-dynamic-import", "transform-react-jsx", "transform-decorators-legacy" ]
}

From what I have read online the regenerator error is due to conflicting packaging. But I do not see where that comes from.

Jonny Asmar · Accepted Answer

From my experience:

Uncaught ReferenceError: webpackJsonp is not defined

is usually a result of missing Webpack code that is extracted by CommonsChunkPlugin. You may need to verify that this file is being injected properly as well.

Solution

I was able to get this working by removing the ChunkManifestPlugin. It seems there is a conflict between it and CommonsChunkPlugin. Something I've not experienced in the past, myself, but check out what I've done below, which does the trick:

Note: You will also need to include babel-polyfill to get the regenerator-runtime working in the browser.

First:

Babel 6

npm install --save babel-polyfill

Babel 7

npm install --save @babel/polyfill

Then:

Diff:

8a9,11
> // To handle the regeneratorRuntime exception
> require('babel-polyfill'); // or @babel/polyfill if Babel 7
> 
15c18,22
<     index: './index.js',
---
>     index: [
>       // To handle the regeneratorRuntime exception
>       'babel-polyfill', // or @babel/polyfill if Babel 7
>       './index.js'
>     ],
82d88
<       filename: '[name].js',
114c120
<   new ChunkManifestPlugin({
---
>   /*new ChunkManifestPlugin({
118c124
<   }),
---
>   }),*/

Full webpack.config.js

const webpack = require('webpack');
const path = require('path');

const HtmlWebpackPlugin = require('html-webpack-plugin');
const ChunkManifestPlugin = require('chunk-manifest-webpack-plugin');
const WebpackChunkHash = require('webpack-chunk-hash');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

// To handle the regeneratorRuntime exception
require('babel-polyfill'); // or @babel/polyfill if Babel 7

/* Shared Dev & Production */

const config = {
  context: path.resolve(__dirname, 'src'),

  entry: {
    index: [
      // To handle the regeneratorRuntime exception
      'babel-polyfill', // or @babel/polyfill if Babel 7
      './index.js'
    ],
    vendor: ['react', 'react-dom', 'react-router', 'react-redux', 'history', 'react-router-dom', 'redux', 'react-router-redux', 'redux-form', 'lodash'],
  },

  module: {
    rules: [
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.(ico|jpg|png|gif|eot|otf|webp|svg|ttf|woff|woff2)(\?.*)?$/,
        exclude: //favicon.ico$/,
        use: [
          {
            loader: 'file-loader',
            query: {
              name: '[path][name][hash].[ext]',
              publicPath: '/'
            }
          }
        ]
      },
      {
        test: /\.css$/,
        include: path.join(__dirname, 'src/style'),
        use: [
          'style-loader',
          'css-loader'
        ]
      },
      {
        test: /\.(ico)(\?.*)?$/,
        exclude: /node_modules/,
        use: {
          loader: 'file-loader',
          options: {name: '[name].[ext]'},
        },
      },
      {
        test: /\.xml/,
        use: {
          loader: 'file-loader',
          options: {name: '[name].[ext]'},
        },
      },
    ],
  },

  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].bundle.js',
    publicPath: '/',
  },

  resolve: {
    extensions: ['.js'],
    modules: [path.resolve(__dirname, 'src'), 'node_modules'],
  },

  plugins: [
    // New moment.js optimization
    new webpack.ContextReplacementPlugin(/moment[/\]locale$/, /en/),

    new webpack.optimize.CommonsChunkPlugin({
      names: ['vendor'],
      minChunks: Infinity
    }),

    new webpack.optimize.ModuleConcatenationPlugin(),

    new HtmlWebpackPlugin({
      appMountId: 'app-root',
      inlineManifestWebpackName: 'webpackManifest',
      template: 'templateIndex.html',
      title: 'Our Site',
    }),
  ],

  devServer: {
    historyApiFallback: true,
  },
};

//if (process.env.NODE_ENV !== 'production' && process.env.NODE_ENV !== 'test') {
config.plugins = [
  ...config.plugins,
  new BundleAnalyzerPlugin({analyzerMode: 'static'}),
];
//}

//if (process.env.NODE_ENV === 'production') {
config.output.filename = '[name].[chunkhash].js';
config.plugins = [
  ...config.plugins,
  new webpack.HashedModuleIdsPlugin(),
  new WebpackChunkHash(),
  /*new ChunkManifestPlugin({
    filename: 'chunk-manifest.json',
    manifestVariable: 'webpackManifest',
    inlineManifest: true,
  }),*/
];
//}

module.exports = config;