webpack.lib.prod.js

const path = require('path');
const webpack = require('webpack');
const CopyPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

const PUBLIC_URL = require('./package').homepage;

module.exports = {
  entry: {
    zethus: './src/zethus.jsx',
    panels: './src/panels/index.jsx',
  },
  mode: 'production',
  devtool: 'source-map',
  optimization: {
    splitChunks: {
      chunks: 'async',
      minSize: 30000,
      maxSize: 0,
      minChunks: 1,
      maxAsyncRequests: 5,
      maxInitialRequests: 3,
      automaticNameDelimiter: '~',
      automaticNameMaxLength: 30,
      name: true,
      cacheGroups: {
        vendors: {
          test: /[\\/]node_modules[\\/]/,
          priority: -10,
        },
        default: {
          minChunks: 2,
          priority: -20,
          reuseExistingChunk: true,
        },
      },
    },
  },
  plugins: [
    new webpack.HashedModuleIdsPlugin(),
    new HtmlWebpackPlugin({
      template: './public/index.html',
      filename: 'index.html',
      templateParameters: {
        PUBLIC_URL,
      },
    }),
    new CopyPlugin([{ from: './public' }]),
    new CleanWebpackPlugin(),
  ],
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.s[ac]ss$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|jpe?g|gif|svg)$/i,
        use: [
          {
            loader: 'file-loader',
          },
        ],
      },
      {
        test: /\.(js|jsx)$/i,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-env'],
        },
      },
    ],
  },
  resolve: {
    extensions: ['.js', '.jsx'],
    alias: {
      three: path.resolve('./node_modules/three'),
    },
  },
  output: {
    filename: '[name].umd.js',
    libraryTarget: 'umd',
    path: path.resolve(__dirname, 'build-lib'),
  },
};