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: "main.js"
  },
  plugins: [
    new htmlWebpackPlugin({
      template: "./src/index.html"
    })
  ],
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env"],
            cacheDirectory: true
          }
        }
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"]
      },
      {
        test: /\.(png|jpe?g|gif)$/,
        use: {
          loader: "file-loader",
          options: {
            outputPath: "images",
            name: "[name].[ext]"
          }
        }
      }
    ]
  },
  mode: "development"
};