webpack.server.config.js

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

module.exports = {
  entry: { server: "./public/server.ts" },
  resolve: { extensions: [".js", ".ts"] },
  target: "node",
  // this makes sure we include node_modules and other 3rd party libraries
  externals: [/(node_modules|main\..*\.js)/],
  output: {
    path: path.join(__dirname, "./public/dist"),
    filename: "[name].js"
  },
  module: {
    rules: [{ test: /\.ts$/, loader: "ts-loader" }]
  },
  plugins: [
    // Temporary Fix for issue: https://github.com/angular/angular/issues/11580
    // for 'WARNING Critical dependency: the request of a dependency is an expression'
    new webpack.ContextReplacementPlugin(
      /(.+)?angular(\\|\/)core(.+)?/,
      path.join(__dirname, "src"), // location of your src
      {} // a map of your routes
    ),
    new webpack.ContextReplacementPlugin(
      /(.+)?express(\\|\/)(.+)?/,
      path.join(__dirname, "src"),
      {}
    )
  ]
};