webpack.server.config.js

const webpack = require('webpack');
const merge = require('webpack-merge');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
const path = require('path');
const nodeExternals = require('webpack-node-externals');

const baseConfig = require('./webpack.base.config');

module.exports = merge.smart(baseConfig, {
  target: 'node',
  entry: {
    server: path.resolve(__dirname, './src/backend/server.ts'),
  },
  externals: [nodeExternals()],
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          cacheDirectory: true,
          babelrc: false,
          presets: [
            ['@babel/preset-env', { targets: { node: 'current' } }],
            '@babel/preset-typescript',
          ],
          plugins: [
            'babel-plugin-transform-typescript-metadata',
            ['@babel/plugin-proposal-decorators', { legacy: true }],
            ['@babel/plugin-proposal-class-properties', { loose: true }],
            '@babel/plugin-proposal-optional-chaining',
          ],
        },
      },
    ],
  },
  plugins: [
    new ForkTsCheckerWebpackPlugin({
      reportFiles: ['src/backend/**/*'],
    }),
  ],
});