rolldown
npmv1.2.7TypeScriptFast JavaScript/TypeScript bundler in Rust with Rollup-compatible API.
Safe to adopt
Yes — rolldown scores well across adoption, maintenance, weight, supply chain, and licensing. 81.9M downloads per week and 8 known dependents. Last published 7 days ago. 50 releases in the last 2 years.
- AAdoption: grade A, Excellent.
81.9M downloads per week and 8 known dependents.
- AMaintenance: grade A, Excellent.
Last published 7 days ago. 50 releases in the last 2 years.
- AWeight: grade A, Excellent.
Pulls in 2 transitive packages, about 851 KB installed (at least — some of the tree is still being crawled).
- ASupply chain: grade A, Excellent.
No install scripts, 4 maintainers, and a contained dependency surface.
- ALicense: grade A, Excellent.
MIT — permissive, with no copyleft found in the dependency tree.
Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.
Install cost
What you actually take on by adding rolldown to a project.
Runtime packages this one declares itself.
Distinct packages in the full runtime tree, deduplicated the way a package manager would.
Unpacked size of this package plus its entire runtime tree.
Longest resolved dependency chain below this package.
Part of this dependency tree has not been crawled yet, so these figures are a lower bound rather than a final total.
Licenses in the dependency tree
Every license you inherit by installing rolldown, not just its own. Check this before a legal review, not after.
Compatibility
- Node.js
- node ^20.19.0 || >=22.12.0
- Module format
- ESM + CommonJS
- TypeScript
- Types included
- Install scripts
- None
rolldown vs the alternatives
Packages solving a similar problem in the npm ecosystem, compared on the signals that drive an adoption decision.
| Package | Weekly downloads | Dependents | License | Last release |
|---|---|---|---|---|
| rolldownthis page | 81.9M | 8 | MIT | 7 days ago |
| minimizer-webpack-plugin | 0 | 1 | MIT | 7 days ago |
| @rolldown/pluginutils | 132.4M | 1 | MIT | 1 day ago |
| get-nonce | 58.4M | 1 | MIT | 1 day ago |
| @vitejs/devtools-rolldown | 81.8K | 1 | MIT | 1 day ago |
| schema-utils | 0 | 2 | MIT | 1 day ago |
Dependencies
Declared by rolldown v1.2.7. Runtime dependencies are installed with the package; dev dependencies are not.
Runtime (2)
Dev (21)
Used by
Popular packages that depend on rolldown.
Native-ESM powered web dev build tool
Fast JavaScript/TypeScript bundler in Rust with Rollup-compatible API.
Selectors for Redux.
Browser running for Vitest using webdriverio
Runtime typescript and ESM support for Node.js
Pure random number generator written in TypeScript
Cross-platform WebSocket Servers for Node.js, Deno, Bun and Cloudflare Workers
Composable caching primitives with TTL, SWR, and HTTP response caching
Relationship graph
Dependencies (left) and dependents (right) of rolldown.
Frequently installed together
Universal filesystem path utils
Simple yet powerful framework for building command-line apps.
An extremely fast JavaScript and CSS bundler and minifier.
Plugin utilities for Rolldown
The modular and type safe schema library for validating structural data
Generates and consumes source maps
when you want to fire an event no matter how a process exits.
Vite DevTools
A pure JavaScript implementation of Sass.
Node.js library that communicates with Embedded Dart Sass using the Embedded Sass protocol
TypeScript definitions for node
the most correct and second fastest glob implementation in JavaScript
Release history
50 releases in the last two years, typically about 7 days apart.
| Version | Published | Size | License |
|---|---|---|---|
| 1.2.7latest | 7 days ago | 826 KB | MIT |
| 1.2.6 | 14 days ago | 826 KB | MIT |
| 1.2.5 | 21 days ago | 819 KB | MIT |
| 1.2.4 | 28 days ago | 816 KB | MIT |
| 1.2.3 | 1 month ago | 816 KB | MIT |
| 1.2.2 | 1 month ago | 816 KB | MIT |
| 1.2.1 | 1 month ago | 806 KB | MIT |
| 1.2.0 | 1 month ago | 775 KB | MIT |
| 1.1.5 | 2 months ago | 767 KB | MIT |
| 1.1.4 | 2 months ago | 754 KB | MIT |
| 1.1.3 | 2 months ago | 754 KB | MIT |
| 1.1.2 | 2 months ago | 753 KB | MIT |
| 1.1.1 | 3 months ago | 756 KB | MIT |
| 1.1.0 | 3 months ago | 752 KB | MIT |
| 1.0.3 | 3 months ago | 750 KB | MIT |
Overview
rolldown is an npm package that fast JavaScript/TypeScript bundler in Rust with Rollup-compatible API. It is extremely widely used, with about 81.9M downloads per week and 8 known dependents in the graph. The latest version is 1.2.7, released under the MIT license.
Who should use it
Teams working in the npm ecosystem who need fast JavaScript/TypeScript bundler in Rust with Rollup-compatible API and value a battle-tested, widely-adopted solution.
When not to use it
Consider an alternative if you need to minimize your dependency tree, or if a more actively-maintained option better fits your npm stack.
Pros
- Large, well-established user base (81.9M weekly downloads).
- Ships TypeScript type definitions.
- Clear open-source license (MIT).
Cons
- Large dependency tree (38 direct dependencies) increases install size and audit surface.
Auto-generated from collected registry metadata. No external claims are inferred.
Maintainers
Frequently asked questions
Should I use rolldown?
Yes — rolldown scores well across adoption, maintenance, weight, supply chain, and licensing. 81.9M downloads per week and 8 known dependents. Last published 7 days ago. 50 releases in the last 2 years.
How do I install rolldown?
Run `npm install rolldown` to add rolldown to your npm project.
How many dependencies does rolldown have?
rolldown declares 38 direct dependencies and pulls in 2 packages in total once its runtime tree is resolved totalling about 851 KB on disk.
What license is rolldown released under?
rolldown is distributed under the MIT license.
How popular is rolldown?
rolldown has approximately 81,949,038 downloads per week and 8 known dependent packages.
Is rolldown still maintained?
The most recent release of rolldown (v1.2.7) was published 7 days ago.
Does rolldown run install scripts?
No. rolldown does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.