多页面打包通用方案

• 动态获取entry和设置html-webpack-plugin数量
• 利用glob.sync
  • 下载包：npm i glob -D
  • entry: glob.sync(path,join(__dirname,'./src/*/index.js'))

    文件夹目录 |-app |-node_modules |-.babelrc |-package.json |-webpack.prod.js |-src

     |-index

    |-index.html |-index.js |-index.css

     |-search

    |-static |-index.html |-index.js |-search.css

// webpack.prod.js
'use strict';
const path = require('path');
const glob = require('glob');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const setMPA = () => {
  const entry = {};
  const htmlWebpackPlugins = [];
  const entryFiles = glob.sync(path.join(__dirname, './src/*/index.js'));
  Object.keys(entryFiles).map(item => {
    const entryFile = entryFiles[item];
    const match = entryFile.match(/.src\/(.*)\/index.js/);
    const pageName = match && match[1];
    entry[pageName] = entryFile;
    htmlWebpackPlugins.push(
      new HtmlWebpackPlugin({
        template: path.join(__dirname, `src/${pageName}/index.html`),
        filename: `${pageName}.html`,
        // chunks决定了html会引用的js
        chunks: [pageName],
        inject: true,
        minify: {
          html5: true,
          collapseWhitespace: true,
          preserveLineBreaks: false,
          minifyCSS: true,
          minifyJS: true,
          removeComments: false
        }
      })
    )
  })
  return {
    entry,
    htmlWebpackPlugins,
  }
}
const { entry, htmlWebpackPlugins } = setMPA();
module.exports = {
  entry: entry,
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name]_[chunkhash:8].js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        use: 'babel-loader',
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, 'css-loader']
      },
      {
        test: /\.less$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader',
          'less-loader',
          {
            loader: 'postcss-loader',
            options: {
              postcssOptions: { plugins: [['postcss-preset-env']] },
            }
          },
          {
            loader: 'px2rem-loader',
            options: {
              remUnit: 75,
              remPrecision: 8
            }
          }
        ],
      },
      {
        test: /\.(scss|sass)$/,
        use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|jpg|gif|jpeg|svg)$/,
        use: [{
          loader: 'file-loader',
          options: {
            name: 'img/[name]_[hash:8].[ext]'
          }
        }]
      },
      {
        test: /\.(woff|woff2|eot|ttf|otf)$/,
        use: [{
          loader: 'file-loader',
          options: {
            name: 'fonts/[name]_[hash:8].[ext]'
          }
        }]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: '[name]_[contenthash:8].css'
    }),
    new CssMinimizerPlugin(),
    new CleanWebpackPlugin(),
  ].concat(htmlWebpackPlugins),
  mode: 'production',
}