webpack.dev.handler.config.js

const path = require('path');
const webpack = require('webpack');

module.exports = {
  mode: 'development',
  entry: ['./server/devHandler.tsx'],
  output: {
    libraryTarget: 'commonjs2',
    path: path.resolve(__dirname, 'dist'),
    filename: 'handler.js',
  },
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.jsx'],
    alias: {
      'react-pdf': 'react-pdf/dist/esm/entry.webpack',
    },
  },
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader?cacheDirectory=true',
          },
          {
            loader: 'ts-loader',
            options: {
              transpileOnly: true,
              happyPackMode: true,
            },
          },
        ],
      },
    ],
  },
  optimization: {
    minimize: false,
    nodeEnv: 'dev',
  },
  target: 'node',
  node: {
    __dirname: false,
    __filename: false,
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.TARGET': JSON.stringify('server'),
    }),
  ],
};