webpack.config.js

var path = require('path')

module.exports = {
  devtool: 'source-map',
  entry: './src/index.jsx',
  output: {
    filename: 'react-csv-reader.js',
    library: {
      name: 'CSVReader',
      type: 'commonjs2',
    },
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
            plugins: ['@babel/plugin-proposal-class-properties'],
          },
        },
      },
      {
        enforce: 'pre',
        test: /\.js$/,
        loader: 'source-map-loader',
      },
    ],
  },
  externals: {
    react: {
      commonjs: 'react',
      commonjs2: 'react',
      amd: 'react',
      root: 'React',
    },
    'prop-types': {
      commonjs: 'prop-types',
      commonjs2: 'prop-types',
      amd: 'prop-types',
      root: 'PropTypes',
    },
  },
}