rollup.js

the next-generation JavaScript module bundler

guide / wiki / github

What is this?

Rollup is a next-generation JavaScript module bundler. Author your app or library using ES2015 modules, then efficiently bundle them up into a single file for use in browsers and Node.js – even if you use advanced features like bindings and cycles.

So, like Browserify?

Yes, except that the resulting bundle is always smaller than the Browserify or Webpack equivalent, because ES2015 modules are inherently more efficient than CommonJS modules. You can even eliminate unused library code with tree-shaking.