webpack.config.js

const path = require('path');
const webpack = require('webpack');
const {
  CleanWebpackPlugin
} = require('clean-webpack-plugin');

/*
 * SplitChunksPlugin is enabled by default and replaced
 * deprecated CommonsChunkPlugin. It automatically identifies modules which
 * should be splitted of chunk by heuristics using module duplication count and
 * module category (i. e. node_modules). And splits the chunks…
 *
 * It is safe to remove "splitChunks" from the generated configuration
 * and was added as an educational example.
 *
 * https://webpack.js.org/plugins/split-chunks-plugin/
 *
 */

const HtmlWebpackPlugin = require('html-webpack-plugin');

/*
 * We've enabled HtmlWebpackPlugin for you! This generates a html
 * page for you when you compile webpack, which will make you start
 * developing and prototyping faster.
 *
 * https://github.com/jantimon/html-webpack-plugin
 *
 */

module.exports = {
  mode: 'development',
  entry: './src/index.ts',

  output: {
    filename: process.env.WEBPACK_DEV_SERVER ?
      '[name].[chunkhash].js' : 'shortcut-flow.js',
    path: path.resolve(__dirname, 'dist'),
    library: 'ShortcutFlow',
    libraryExport: 'default',
    libraryTarget: 'this'
  },

  plugins: [new webpack.ProgressPlugin(), new HtmlWebpackPlugin(), new CleanWebpackPlugin()],

  module: {
    rules: [{
        test: /\.(ts|tsx)?$/,
        enforce: 'pre',
        use: [{
          options: {
            eslintPath: require.resolve('eslint'),
          },
          loader: require.resolve('eslint-loader'),
        }, ],
        exclude: [/node_modules/],
      },
      {
        test: /\.(ts|tsx)?$/,
        loader: 'ts-loader',
        include: [path.resolve(__dirname, 'src')],
        exclude: [/node_modules/]
      }
    ]
  },

  optimization: {
    splitChunks: {
      cacheGroups: {
        vendors: {
          priority: -10,
          test: /[\\/]node_modules[\\/]/
        }
      },

      chunks: 'async',
      minChunks: 1,
      minSize: 30000,
      name: true
    }
  },

  devServer: {
    // open: true
  },

  resolve: {
    extensions: ['.tsx', '.ts', '.js']
  }
};