webpack.config.js

const path = require('path')
const TerserPlugin = require('terser-webpack-plugin')
const nodeExternals = require('webpack-node-externals')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')

module.exports = {
  target: 'node',
  mode: 'production',
  entry: './src/index.ts',
  plugins: [
    new CleanWebpackPlugin()
  ],
  output: {
    filename: 'server.js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        enforce: 'pre',
        test: /\.ts$/,
        use: ['eslint-loader'],
        exclude: /node_modules/
      },
      {
        test: /\.ts$/,
        use: ['ts-loader'],
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, 'src/')
    },
    extensions: ['.ts', '.js', '.json']
  },
  optimization: {
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          keep_fnames: true,
          keep_classnames: true
        }
      })
    ]
  },
  externals: [nodeExternals()]
}