Rollup

What it is

Rollup is a next-generation ES2015 module bundler that compiles small pieces of code into something larger and more complex, such as a library or application. It's essential for developers looking to optimize their JavaScript applications by reducing file size and improving performance.

Rollup stands out as the premier ES2015 module bundler, offering unparalleled tree-shaking and optimization features that are crucial for modern JavaScript applications.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Steep learning curve for beginners

   Understanding the configuration and plugin system requires a deep dive into its documentation and concepts.

2. 02

   Limited default integrations compared to Webpack

   Rollup relies heavily on plugins for features that are built-in to other bundlers like Webpack, which can lead to more complex configurations.

3. 03

   Documentation can be sparse in certain areas

   The official documentation may not cover all use cases and edge scenarios as comprehensively as needed for some users.

4. 04

   Performance issues with large codebases

   Rollup can become slow when processing very large projects, especially those that require extensive tree-shaking or complex transformations.

What it does well

• Tree-shaking to eliminate dead code

• Support for ES2015 modules

• Plugin ecosystem for customization and extension

• Optimized output for smaller bundle sizes

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.