Assembly Line

SWC

Rust-based platform for the Web

SWC is an open-source javascript build tools project on GitHub under the Apache-2.0 license (permissive), with 34k stars. It is built with Rust, V8, react and Tokio. Its last push was today.

Stars
34k
License
Apache-2.0
Activity
Active
Latest release
v1.16.22

Code on GitHub Website

Replaces Babel: why SWC is the better choice, and when it is not.

Judgement

What it is
Developer tool
What it does
A TypeScript and JavaScript compiler and minifier written in Rust, used as a faster replacement for Babel and inside tools such as Next.js and Rspack.
Adopt it when
Babel transpilation is slowing your builds or tests and you do not depend on Babel-only plugins.
Watch out
Plugins are written in Rust compiled to WebAssembly and break across versions, so the plugin ecosystem is far smaller than Babel's.
Ready for
Production-ready
Runs as
Library and command line
Built with
Rust and JavaScript
How established
Established: started 9 years ago, latest release v1.16.22.
What the license allows
You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

RustV8reactTokio

Follow it down: SWC → Rust → runs on a microchip

How compilers were built, back to punched paper tape

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Stars, license and activity come from GitHub and refresh on a rolling hourly schedule. The project's own description is quoted as written.