webpack.config.js

const path = require('path'),
  HtmlWebpackPlugin = require('html-webpack-plugin'),
  MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
  mode: 'none',
  entry: {
    app: path.join(__dirname, 'src', 'index.tsx'),
  },
  target: 'web',
  resolve: {
    extensions: ['.ts', '.tsx', '.js'],
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: '/node_modules/',
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
      },
      {
        test: /\.css$/,
        exclude: /node_modules/,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
      },
      {
        test: /\.(png|jpe?g|gif|svg)$/,
        loader: 'url-loader?limit=5000&name=img/[name].[ext]',
      },
    ],
  },
  output: {
    filename: '[name].js',
    path: path.resolve(__dirname, 'build'),
  },
  devServer: {
    contentBase: path.join(__dirname, 'build'),
    compress: true,
    port: 3999,
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: __dirname + '/src/index.html',
      filename: 'index.html',
      inject: 'body',
    }),
    new MiniCssExtractPlugin(),
  ],
};