debugging https://github.com/rollup/rollup-plugin-npm/issues/10

index.js

import React from 'react';

console.log( 'React:', React );

package.json

{
  "dependencies": {
    "react": "^0.14.3"
  },
  "devDependencies": {
    "rollup": "^0.21.2",
    "rollup-plugin-commonjs": "^1.4.0",
    "rollup-plugin-npm": "^1.1.0",
    "rollup-plugin-replace": "^1.1.0"
  },
  "scripts": {
    "build": "rollup -c && open test.html"
  }
}

rollup.config.js

import npm from 'rollup-plugin-npm';
import commonjs from 'rollup-plugin-commonjs';
import replace from 'rollup-plugin-replace';

export default {
	entry: 'index.js',
	dest: 'bundle.js',
	plugins: [
		replace({
			'process.env.NODE_ENV': '"production"'
		}),
		npm({
			main: true
		}),
		commonjs({
			include: 'node_modules/**'
		})
	],
	format: 'iife'
};

test.html

<p>check console</p>
<script src='bundle.js'></script>