webpack.config.js

const path = require('path');
const webpack = require('webpack');

module.exports = {
  entry: path.join(__dirname, 'src/index.js'),
  output: {
    path: path.join(__dirname, 'dist'),
    filename: 'react-dropdown-select.js',
    library: 'reactDropdownSelect',
    libraryTarget: 'umd',
    umdNamedDefine: true,
    globalObject: 'this'
  },
  target: 'node', // for support ssr in emotionjs
  externals: {
    react: {
      commonjs: 'react',
      commonjs2: 'react',
      amd: 'react',
      root: 'React'
    },
    'react-dom': {
      commonjs: 'react-dom',
      commonjs2: 'react-dom',
      amd: 'react-dom',
      root: 'ReactDOM'
    },
    'prop-types': {
      commonjs: 'prop-types',
      commonjs2: 'prop-types',
      amd: 'prop-types',
      root: 'PropTypes'
    }
  },
  bail: true,
  mode: 'production',
  resolve: {
    modules: [path.resolve(__dirname, './src'), 'node_modules'],
    extensions: ['.js']
  },
  module: {
    rules: [
      {
        test: /\.(ts|js)x?$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  },
  plugins: [
    new webpack.EnvironmentPlugin({
      NODE_ENV: 'production',
      DEBUG: false
    })
  ]
};