webpack.config.js

const path = require("path");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");

module.exports = {
  mode: "development",
  devtool: "inline-source-map",
  entry: {
    popup: "./src/pages/popup.tsx",
    panel: "./src/pages/panel.tsx",
    sw: "./src/sw/sw.ts",
  },
  output: {
    path: path.resolve(__dirname, "dist/js"),
    filename: "[name].js",
    clean: true,
  },
  resolve: {
    extensions: [".ts", ".tsx", ".js"],
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: [
              "@babel/preset-env",
              "@babel/preset-react",
              "@babel/preset-typescript",
            ],
          },
        },
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader", "postcss-loader"],
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new CopyWebpackPlugin({
      patterns: [{ from: "public", to: path.resolve(__dirname, "dist") }],
    }),
  ],
};