webpack.config.js

const path = require('path');
const webpack = require('webpack');
const TerserPlugin = require('terser-webpack-plugin');
const getPackageJson = require('./scripts/getPackageJson');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");

const {
  version,
  name,
  license,
  repository,
  author,
} = getPackageJson('version', 'name', 'license', 'repository', 'author');

const banner = `
  ${name} v${version}
  ${repository.url}

  Copyright (c) ${author.replace(/ *<[^)]*> */g, " ")} and project contributors.

  This source code is licensed under the ${license} license found in the
  LICENSE file in the root directory of this source tree.
`;

module.exports = {
  mode: "production",
  devtool: 'source-map',
  entry: './src/lib/index.tsx',
  output: {
    filename: 'index.js',
    path: path.resolve(__dirname, 'build'),
    library: "Multi Select Component",
    libraryTarget: 'umd',
    clean: true,
    globalObject: 'this',
  },
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({ extractComments: false }),
      new CssMinimizerPlugin()
    ],
  },
  externals: {
    'react': 'react'
  },
  module: {
    rules: [
      {
        test: /\.(m|j|t)s$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
          }
        }
      },
      {
        test: /\.tsx?$/,
        loader: 'ts-loader'
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      { 
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.svg$/,
        use: 'url-loader'
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
        filename: 'css/index.css'
    }),
    new webpack.BannerPlugin(banner)
  ],
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.json']
  }
};