214 releases (22 breaking)

0.23.13 Mar 19, 2024
0.23.7 Feb 22, 2024
0.21.2 Dec 29, 2023
0.20.35 Nov 26, 2023
0.1.8 Dec 21, 2022

#837 in Programming languages

Download history 2585/week @ 2023-12-18 2012/week @ 2023-12-25 3572/week @ 2024-01-01 3823/week @ 2024-01-08 3075/week @ 2024-01-15 4660/week @ 2024-01-22 3120/week @ 2024-01-29 2587/week @ 2024-02-05 2168/week @ 2024-02-12 3132/week @ 2024-02-19 3086/week @ 2024-02-26 4016/week @ 2024-03-04 3577/week @ 2024-03-11 3236/week @ 2024-03-18 2592/week @ 2024-03-25 4621/week @ 2024-04-01

14,253 downloads per month
Used in 46 crates (3 directly)


22K SLoC


Make the web (development) faster.

downloads (@swc/core) downloads (3rd party)

undefined GitHub release (latest SemVer)

GitHub code size in bytes node-current (scoped)


SWC (stands for Speedy Web Compiler) is a super-fast TypeScript / JavaScript compiler written in Rust. It's a library for Rust and JavaScript at the same time. If you are using SWC from Rust, see rustdoc and for most users, your entry point for using the library will be parser.

Also, SWC tries to ensure that

If you select the latest version of each crates, it will work

for rust users.

MSRV of crates is currently nightly, but we will support stable rustc again in the future.

If you are using SWC from JavaScript, please refer to docs on the website.


Check out the documentation in the website.


Please see comparison with babel.


Please see benchmark results on the website.

Supporting swc


SWC is a community-driven project, and is maintained by a group of volunteers. If you'd like to help support the future of the project, please consider:


See CONTRIBUTING.md. You may also find the architecture documentation useful (ARCHITECTURE.md).


SWC is primarily distributed under the terms of the Apache License (Version 2.0).

See LICENSE for details.


~143K SLoC