webpack.common.js

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

module.exports = {
  entry: "./src/app/index.tsx",
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"]
      },
      {
        test: /\.tsx?$/,
        use: "ts-loader",
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    extensions: [".tsx", ".ts", ".js"]
  },
  output: {
    filename: "bundle.js",
    path: path.resolve(__dirname, "dist")
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "src/app/index.html"
    })
  ]
};