Demonstrate use of CommonJS module in Rollup

index.js

// Just a couple of examples from the crypto-js README.
// run with `node bundle.js` after running the rollup build.
import CryptoJS from 'crypto-js';
import SHA256 from 'crypto-js/sha256';
console.log(CryptoJS.HmacSHA1('Message', 'Key'));
console.log(SHA256('Message'));

rollup.config.js

import commonjs from 'rollup-plugin-commonjs';
import resolve from 'rollup-plugin-node-resolve';

export default {
  entry: 'index.js',
  dest: 'bundle.js',
  format: 'iife',
  plugins: [
    resolve(),
    commonjs(),
  ],
};