rollup.config.js

/* eslint import/no-extraneous-dependencies: 0 */
import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import babel from 'rollup-plugin-babel';
import pkg from './package.json';

export default [
  // browser-friendly UMD build
  {
    entry: 'src/index.js',
    dest: pkg.browser,
    format: 'umd',
    moduleName: 'redux-tools',
    plugins: [
      resolve(), // so Rollup can find `ms`
      commonjs(), // so Rollup can convert `ms` to an ES module
      babel({ exclude: ['node_modules/**'] })
    ]
  },

  // CommonJS (for Node) and ES module (for bundlers) build.
  // (We could have three entries in the configuration array
  // instead of two, but it's quicker to generate multiple
  // builds from a single configuration where possible, using
  // the `targets` option which can specify `dest` and `format`)
  {
    entry: 'src/index.js',
    external: ['ms'],
    targets: [
      { dest: pkg.main, format: 'cjs' },
      { dest: pkg.module, format: 'es' }
    ],
    plugins: [
      babel({ exclude: ['node_modules/**'] })
    ]
  }
];