Rollup
## Overview
Rollup is a module bundler for JavaScript which compiles small pieces of code into something larger and more complex, such as a library or application. It uses the standardized ES module format for code, instead of previous idiosyncratic solutions such as CommonJS and AMD. ES modules let you freely and seamlessly combine the most useful individual functions from your favorite libraries. Rollup can optimize ES modules for faster native loading in modern browsers, or output a legacy module format allowing ES module workflows today.
## Quick Start Guide
Install with `npm install --global rollup`. Rollup can be used either through a [command line interface](https://rollupjs.org/command-line-interface/) with an optional configuration file or else through its [JavaScript API](https://rollupjs.org/javascript-api/). Run `rollup --help` to see the available options and parameters. The starter project templates, [rollup-starter-lib](https://github.com/rollup/rollup-starter-lib) and [rollup-starter-app](https://github.com/rollup/rollup-starter-app), demonstrate common configuration options, and more detailed instructions are available throughout the [user guide](https://rollupjs.org/introduction/).
### Commands
These commands assume the entry point to your application is named main.js, and that you'd like all imports compiled into a single file named bundle.js.
For browsers:
```bash
# compile to a