webpack.config.js

const path = require("path");

module.exports = {
  entry: "./client/index.js",
  output: {
    path: path.resolve(__dirname, "./build"),
    filename: "bundle.js",
  },
  mode: process.env.NODE_ENV,
  module: {
    rules: [
      {
        test: /jsx?$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env", "@babel/preset-react"],
            plugins: ["@babel/plugin-transform-react-jsx"],
          },
        },
      },
      {
        test: /css?$/,
        use: [
          // Creates `style` nodes from JS strings
          "style-loader",
          // Translates CSS into CommonJS
          "css-loader",
        ],
      },
      {
        test: /\.jpg$/,
        use: "url-loader",
      },
    ],
  },
  resolve: {
    extensions: [".js", ".jsx"],
  },
  devServer: {
    publicPath: "/build/",
    contentBase: path.join(__dirname, "public/"),
    port: 8080,
  },
};