Example of extending a Webpack config

extend-webpack-config-example

const baseConfig = require("./webpack.config");
const path = require("path");

module.exports = Object.assign(
  {},
  {
    target: "node",
    entry: "./src/ServerApp.jsx",
    output: {
      filename: "server.bundle.js",
      path: path.resolve(__dirname, "functions/build"),
      libraryTarget: "commonjs2"
    }
  },
  baseConfig
);