How to use Webpack 4 SplitChunksPlugin with HtmlWebpackPlugin for Multiple Page Application?

问题

I'm trying to utilize the SplitChunksPlugin to produce separate bundles per each page/template in a MPA. When I use the HtmlWebpackPlugin, I get an html file for each page with a script tag pointing to the correct bundle. That is great! However, the trouble I'm having is with my vendor files. I want separate html files to point to only the vendor bundles they need. I can't get each separate html file to point to the correct vendor bundles when the SplitChunksPlugin creates multiple vendor bundles. The bundles produced are:

home.bundle.js
product.bundle.js
cart.bundle.js
vendors~cart~home~product.bundle.js
vendors~cart~product.bundle.js

So basically the home template should reference home.bundle.js, vendors~cart~home~product.bundle.js, and not the second vendor bundle. Only the cart and product templates should reference both vendor bundles. I am utilizing the chunks option for the HtmlWebpackPlugin but can't get it to pull the correct vendor bundles unless I explicitly reference the name of it like so:

chunks: ['vendors~cart~home~product.bundle','home']

But this kinda defeats the purpose of dynamically rendering your script tags. I've tried creating a vendor entry point but this lumps all my vendors together. Is there some simple config I'm missing?

My webpack.config.js:

const path = require('path');
const webpack = require('webpack');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const Visualizer = require('webpack-visualizer-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    mode: 'development',
    devtool: 'cheap-module-eval-source-map',
    entry: {
        home: './src/js/page-types/home.js',
        product: './src/js/page-types/product.js',
        cart: './src/js/page-types/cart.js'
    },
    output: {
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist/js')
    },
    optimization: {
        splitChunks: {
            chunks: 'all'
        }
    },
    plugins: [
        new CleanWebpackPlugin(['dist']),
        new Visualizer(),
        new HtmlWebpackPlugin({
            filename: 'home.html',
            chunks: ['vendors','home']
        }),
        new HtmlWebpackPlugin({
            filename: 'product.html',
            chunks: ['vendors','product']
        }),
        new HtmlWebpackPlugin({
            filename: 'cart.html',
            chunks: ['vendors~cart~product','cart']
        }),
    ], ...

My js modules:

/* home.js */
    import jQuery from 'jquery';
    import 'bootstrap';

cart and product also reference the react library:

/* cart.js */
    import jQuery from 'jquery';
    import 'bootstrap';
    import React from 'react';
    import ReactDOM from 'react-dom';

/* product.js */
    import jQuery from 'jquery';
    import 'bootstrap';
    import React from 'react';
    import ReactDOM from 'react-dom';

Example html output home.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Webpack App</title>
  </head>
  <body>
  <script type="text/javascript" src="home.bundle.js"></script></body>
</html>

回答1:

Use version4 of html-webpack-plugin (which is in beta now), and only include the entry chunk in the chunks option.

npm i -D html-webpack-plugin@next

and

module.exports = {
    new HtmlWebpackPlugin({
        filename: 'home.html',
        chunks: ['home']
    }),
    new HtmlWebpackPlugin({
        filename: 'product.html',
        chunks: ['product']
    }),
    new HtmlWebpackPlugin({
        filename: 'cart.html',
        chunks: ['cart']
    }),
};

This will include related chunks automatically.

回答2:

One option is to manually create your vendor chunks and then include whichever of those chunks needed for a page in the chunks option of HtmlWebpackPlugin.

webpack.config.js:

const path = require('path');
const webpack = require('webpack');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const Visualizer = require('webpack-visualizer-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    mode: 'development',
    devtool: 'cheap-module-eval-source-map',
    entry: {
        home: './src/js/page-types/home.js',
        product: './src/js/page-types/product.js',
        cart: './src/js/page-types/cart.js'
    },
    output: {
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist/js')
    },
    optimization: {
        splitChunks: {
            cacheGroups: {
                'vendor-bootstrap': {
                    name: 'vendor-bootstrap',
                    test: /[\\/]node_modules[\\/](jquery|bootstrap)[\\/]/,
                    chunks: 'initial',
                    priority: 2
                },
                'vendor-react': {
                    name: 'vendor-react',
                    test: /[\\/]node_modules[\\/]react.*?[\\/]/,
                    chunks: 'initial',
                    priority: 2
                },
                'vendor-all': {
                    name: 'vendor-all',
                    test: /[\\/]node_modules[\\/]/,
                    chunks: 'initial',
                    priority: 1
                },
            }
        }
    },
    plugins: [
        new CleanWebpackPlugin(['dist']),
        new Visualizer(),
        new HtmlWebpackPlugin({
            filename: 'home.html',
            chunks: ['vendor-bootstrap', 'vendor-all', 'home']
        }),
        new HtmlWebpackPlugin({
            filename: 'product.html',
            chunks: ['vendor-bootstrap', 'vendor-react', 'vendor-all', 'product']
        }),
        new HtmlWebpackPlugin({
            filename: 'cart.html',
            chunks: ['vendor-bootstrap', 'vendor-react', 'vendor-all', 'cart']
        }),
    ], ...

The vendor-all chunk is to catch any other vendor libraries that are not included in the other chunks.

来源：https://stackoverflow.com/questions/50803260/how-to-use-webpack-4-splitchunksplugin-with-htmlwebpackplugin-for-multiple-page

标签

javascript

Webpack

build-tools

html-webpack-plugin

webpack-4