webpack.config.js

const path = require('path');

const mode = process.env.NODE_ENV || 'development';

const config = {
  mode,
  cache: { type: 'filesystem' },
  resolve: {
    cacheWithContext: true,
    extensions: ['', '.js', '.ts'],
  },
  entry: path.resolve(__dirname, 'src/index.ts'),
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: {
          loader: 'ts-loader',
          options: {
            experimentalFileCaching: true,
          },
        },
        exclude: /node_modules|dist/,
      },
    ],
  },
  resolve: {
    extensions: ['.ts', '.js'],
  },
};

module.exports = [
  {
    ...config,
    target: 'node',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'dist.node.js',
      library: {
        type: 'commonjs2',
      },
    },
  },
  {
    ...config,
    target: 'web',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'dist.js',
    },
  },
  {
    ...config,
    target: 'web',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'dist.web.js',
      library: {
        type: 'commonjs2',
      },
    },
  },
];