rollupify 
Browserify transform to apply Rollup, converting ES6/ES2015 modules into one big CommonJS module.
This tends to result in smaller bundle sizes, due to Rollup's tree-shaking and scope-hoisting capabilities.
rollup-plugin-commonjs and rollup-plugin-node-resolve, or manually run rollup before browserify.
Usage
npm install rollupify
Then:
browserify -t rollupify index.js > output.js
Or in your package.json:
"browserify": {
"transform": ["rollupify"]
}Example
Input:
// index.js
import hello from './hello';
console.log(hello);
export default hello;// hello.js
export default "hello world";Output:
(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';
var hello = "hello world";
console.log(hello);
module.exports = hello;
},{}]},{},[1]);Using alongside other transforms
If you are using other transforms like babelify, make sure you apply
the transforms in the right order. rollupify should apply before babelify:
browserify -t rollupify -t babelify index.js > output.js
Or when configuring:
"browserify": {
"transform": ["rollupify", "babelify"]
}Details
rollupify only works on ES6/ES2015 modules. Any require() statements will
be left untouched, and passed on to Browserify like normal.
Sourcemaps are supported, assuming you pass --debug or {debug: true}
into Browserify.
Need more evidence that Rollup and ES6 modules are awesome? See rollup-comparison and A better build system with Rollup.
Need to get started converting your CommonJS codebase into ES6? Try cjs-to-es6.
Customising rollup
Given a rollup.config.js like:
module.exports = {
plugins: [
require('rollup-plugin-babel')({
exclude: 'node_modules/**'
})
]
}Use it through the command line:
browserify -t [ rollupify --config rollup.config.js ] index.js > output.js
Or in your package.json:
"browserify": {
"transform": ["rollupify", {"config": "rollup.config.js"}]
}If you are using Browserify in JavaScript, you can also pass in the config object directly:
var b = browserify('./')
.transform('rollupify', {
config: { /* your rollup config goes here */ }
}).bundle();
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