webpack.config.js

const path = require("path");
module.exports = {
  mode: "development",
  entry: "./src/index.js",
  output: {
    filename: "main.js",
    path: path.resolve(__dirname, "build"),
  },
  devtool: "inline-source-map",
  devServer: {
    open: true,
    static: {
      directory: path.join(__dirname, "build"),
    },
    port: 3030,
  },
  module: {
    rules: [
      {
        test: /\.js$/i,
        exclude: /(node_modules)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env"],
          },
        },
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          // Creates `style` nodes from JS strings
          "style-loader",
          // Translates CSS into CommonJS
          "css-loader",
          // Compiles Sass to CSS
          "sass-loader",
        ],
      },
    ],
  },
};