webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  entry: "./src/index.js",
  output: {
    path: path.resolve(__dirname, "build"),
    filename: "bundle.js",
    publicPath: "",
  },
  devServer: {
    contentBase: "./build", //where contents are served from
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: "index.html", // name of html file to be created
      template: "./index.html", // source from which html file would be created
    }),
  ],
  module: {
    rules: [
      {
        test: /\.js$/, //using regex to tell babel exactly what files to transcompile
        exclude: /node_modules/, // files to be ignored
        use: {
          loader: "babel-loader", // specify the loader
        },
      },
      {
        test: /\.css$/i,
        use: [
          // The `injectType`  option can be avoided because it is default behaviour
          {
            loader: "style-loader",
            options: { insert: "head", injectType: "singletonStyleTag" },
          },
          "css-loader",
        ],
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        loader: "file-loader",
        options: {
          name: "[name].[ext]",
          outputPath: "assets/images/",
        },
      },
    ],
  },
};