webpack.config.js

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

const isDevelopment = process.env.NODE_ENV !== "production";

module.exports = {
  mode: isDevelopment ? "development" : "production",
  entry: "./src/index.tsx",
  devServer: {
    hot: true,
  },
  target: "web",
  output: {
    filename: "bundle.[hash].js",
    path: path.resolve(__dirname, "build"),
    clean: true,
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "./src/index.html",
    }),
  ],
  resolve: {
    modules: [__dirname, "src", "node_modules"],
    extensions: ["*", ".js", ".jsx", ".tsx", ".ts"],
  },
  module: {
    rules: [
      {
        test: /\.ts$|tsx/,
        exclude: /node_modules/,
        loader: require.resolve("babel-loader"),
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.png|svg|jpg|gif$/,
        use: ["file-loader"],
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          // Creates `style` nodes from JS strings
          "style-loader",
          // Translates CSS into CommonJS
          "css-loader",
          // Compiles Sass to CSS
          "sass-loader",
        ],
      },
    ],
  },
};