webpack.config.js

const path = require('path')
const MiniCSSExtractPlugin = require('mini-css-extract-plugin')
const PnpWebpackPlugin = require('pnp-webpack-plugin')
const TerserPlugin = require('terser-webpack-plugin')
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const HTMLWebpackPlugin = require('html-webpack-plugin')

module.exports = env => ({
  mode: env && env.production ? 'production' : 'development',
  entry: {
    'vue-ish': '@/index',
    main: '@/demo/js/main',
  },
  output: {
    filename: 'js/[name].js',
    path: path.resolve(__dirname, 'dist/demo'),
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
          },
        },
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: MiniCSSExtractPlugin.loader,
            options: {
              hmr: !(env && env.production),
            },
          },
          'css-loader',
        ],
      },
      {
        test: /\.woff$/,
        use: {
          loader: 'file-loader',
          options: {
            name: 'fonts/[name].[ext]',
            publicPath: '../',
          },
        },
      },
    ],
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, 'src'),
    },
    plugins: [PnpWebpackPlugin],
  },
  resolveLoader: {
    plugins: [PnpWebpackPlugin.moduleLoader(module)],
  },
  devtool: env && env.production ? undefined : 'eval-source-map',
  optimization: {
    minimizer: [new TerserPlugin(), new OptimizeCSSAssetsPlugin()],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCSSExtractPlugin({
      filename: 'css/style.css',
    }),
    new HTMLWebpackPlugin({
      template: 'src/demo/index.html',
      inject: false,
    }),
  ],
})