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repro for rollup/rollup-plugin-commonjs#140

bundle.js

(function () {
'use strict';

var BEEP_DELAY = 500;

function beep() {
	process.stdout.write('\u0007');
}

function melodicalBeep(val, cb) {
	if (val.length === 0) {
		cb();
		return;
	}

	setTimeout(function () {
		if (val.shift() === '*') {
			beep();
		}

		melodicalBeep(val, cb);
	}, BEEP_DELAY);
}

var index = function (val, cb) {
	if (!process.stdout.isTTY ||
		process.argv.indexOf('--no-beep') !== -1 ||
		process.argv.indexOf('--beep=false') !== -1) {
		return;
	}

	cb = cb || function () {};

	if (val === parseInt(val)) {
		if (val < 0) {
			throw new TypeError('Negative numbers are not accepted');
		}

		if (val === 0) {
			cb();
			return;
		}

		for (var i = 0; i < val; i++) {
			setTimeout(function (i) {
				beep();

				if (i === val - 1) {
					cb();
				}
			}, BEEP_DELAY * i, i);
		}
	} else if (!val) {
		beep();
		cb();
	} else if (typeof val === 'string') {
		melodicalBeep(val.split(''), cb);
	} else {
		throw new TypeError('Not an accepted type');
	}
};

console.log( `beeper`, index );

}());

index.js

import beeper from 'beeper';

console.log( `beeper`, beeper )

package.json

{
  "devDependencies": {
    "rollup": "^0.37.0",
    "rollup-plugin-commonjs": "^5.0.5",
    "rollup-plugin-node-resolve": "^2.0.0"
  },
  "dependencies": {
    "beeper": "^1.1.1"
},
"scripts": {
    "build": "rollup -c"
}
}

rollup.config.js

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

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