webpack.config.js

const HtmlWebpackPlugin = require("html-webpack-plugin");
const HtmlWebpackInlineSourcePlugin = require("html-webpack-inline-source-plugin");

const path = require("path");

module.exports = {
  entry: {
    ui: "./src/ui/App.tsx",
    code: "./src/code.ts"
  },
  output: {
    filename: "[name].js",
    path: path.resolve(__dirname, "dist")
  },

  resolve: {
    extensions: [".ts", ".tsx", ".js", ".jsx", "json"]
  },

  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: [{ loader: "ts-loader" }],
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: [
          "style-loader",
          {
            loader: "css-loader",
            options: {
              modules: false
            }
          }
        ]
      }
    ]
  },

  plugins: [
    new HtmlWebpackPlugin({
      template: "./src/ui/index.html",
      filename: "ui.html",
      inlineSource: ".(js|css)$",
      chunks: ["ui"]
    }),
    new HtmlWebpackInlineSourcePlugin()
  ]
};