rollup.config.js

import nodeResolve from 'rollup-plugin-node-resolve'
import babel from 'rollup-plugin-babel'
import replace from 'rollup-plugin-replace'
import uglify from 'rollup-plugin-uglify'
import commonjs from 'rollup-plugin-commonjs'

const env = process.env.NODE_ENV
const config = {
  format: 'umd',
  moduleName: 'Redux',
  plugins: [
    nodeResolve({
      jsnext: true
    }),
    babel({
      exclude: 'node_modules/**'
    }),
    replace({
      'process.env.NODE_ENV': JSON.stringify(env)
    }),
    commonjs({
      namedExports: {
        'node_modules/react/react.js': ['Children', 'Component', 'PropTypes', 'createElement'],
        'node_modules/react-dom/index.js': ['render']
      }
    })
  ]
}

if (env === 'production') {
  config.plugins.push(
    uglify({
      compress: {
        pure_getters: true,
        unsafe: true,
        unsafe_comps: true,
        warnings: false
      }
    })
  )
}

export default config