rollup.config.js

import nodeResolve from 'rollup-plugin-node-resolve'
import babel from 'rollup-plugin-babel'
import commonjs from 'rollup-plugin-commonjs'
import { list as babelHelpersList } from 'babel-helpers'
import pkg from './package.json'

const config = {
  output: {
    format: process.env.BABEL_ENV
  },
  plugins: [
    nodeResolve({
      jsnext: true,
      extensions: ['.js', '.jsx']
    }),
    babel({
      exclude: 'node_modules/**',
      plugins: ['external-helpers'],
      externalHelpersWhitelist: babelHelpersList.filter(helperName => helperName !== 'asyncGenerator')
    }),
    commonjs()
  ],
  external: Object.keys(pkg.dependencies).concat(Object.keys(pkg.peerDependencies))
}

export default config