webpack.config.js

const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin');
const path = require('path');
const webpack = require('webpack');

module.exports = (_, argv) => ({
  mode: argv.mode === 'development' ? 'development' : 'production',
  devtool: argv.mode === 'development' ? 'inline-source-map' : false,

  target: 'web',

  entry: {
    ui: path.resolve(__dirname, 'src/ui/index.ts'),
    code: path.resolve(__dirname, 'src/code.ts')
  },
  resolve: {
    plugins: [new TsconfigPathsPlugin()],
    extensions: ['.ts', '.js'],
    fallback: {
      stream: require.resolve('stream-browserify'),
      path: require.resolve('path-browserify'),
      buffer: require.resolve('buffer/'),
      punycode: require.resolve('punycode')
    }
  },
  module: {
    rules: [
      {
        test: /\.pug$/,
        use: 'pug-loader'
      },
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        use: 'ts-loader'
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      }
    ]
  },
  output: {
    filename: '[name].js',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new HtmlWebpackPlugin({
      inject: 'body',
      template: path.resolve(__dirname, 'src/ui/template.pug'),
      filename: 'ui.html',
      chunks: ['ui']
    }),
    new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/ui/]),
    new webpack.ProvidePlugin({
      Buffer: ['buffer', 'Buffer']
    }),
    new webpack.ProvidePlugin({
      process: 'process/browser'
    })
  ]
});