webpack.config.js

var HtmlWebpackPlugin = require("html-webpack-plugin");
var MiniCssExtractPlugin = require("mini-css-extract-plugin");
var webpack = require("webpack");
var path = require("path");

var basePath = __dirname;

module.exports = {
  
  context: path.join(basePath, "src"),
  resolve: {
    extensions: [".js", ".ts", ".tsx"]
  },
  entry: ["@babel/polyfill", "./index.tsx"],
  output: {
    path: path.join(basePath, "build"),
    filename: "bundle.js"
  },
  devtool: "source-map",
  devServer: {
    port: 8008
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        loader: "awesome-typescript-loader",
        options: {
          useBabel: true,
          babelCore: "@babel/core" // needed for Babel v7
        }
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"]
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: "file-loader",
        options: {
          name: "assets/img/[name].[ext]?[hash]"
        }
      }
    ]
  },
  plugins: [
    //Generate index.html in /dist => https://github.com/ampedandwired/html-webpack-plugin
    new HtmlWebpackPlugin({
      filename: "index.html", //Name of file in ./dist/
      template: "index.html", //Name of template in ./src
      hash: true
    }),
    new MiniCssExtractPlugin({
      filename: "[name].css",
      chunkFilename: "[id].css"
    }),
    new webpack.DefinePlugin({
      'process.env.PUBLIC_URL': JSON.stringify('ws://localhost:7878')
    })
  ]
};