# swc-project/swc

Rust-based platform for the Web

Repository: https://github.com/swc-project/swc
Canonical: https://ross.abutalabs.com/products/swc
Homepage: https://swc.rs
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: ecmascript, compiler, rust, javascript, parser, babel, swc, ecmascript-parser, typescript, typescript-compiler, typescript-parser
Last push: 2026-08-26T06:06:26+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 3176, "days_push": 7, "days_rel": 14, "gap_med": 0.0, "n_releases_24m": 269}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 34190, forks 1551 (observed 2026-08-28T04:11:58.739675+00:00)

## What it is
SWC (Speedy Web Compiler) is a super-fast TypeScript/JavaScript compiler written in Rust, usable as both a Rust library and a JavaScript package. It handles compilation, transformation, and minification of modern JS/TS code, and is embedded in tools like Next.js, Parcel, and Deno.

## Use cases
- transpile typescript to javascript fast
- babel replacement for faster builds
- parse javascript or typescript into an AST
- speed up jest test transforms
- minify javascript bundles
- compile modern js for older browsers
- build custom javascript transforms in rust

## When to choose
- you need a much faster alternative to Babel or tsc for transpilation
- you're building JS/TS tooling in Rust and need a parser or transform pipeline
- you use Next.js, Rspack, or webpack and want faster transforms via swc-loader

## When to avoid
- you rely on Babel plugins with no SWC equivalent
- you need full TypeScript type-checking, which SWC does not perform
- you need a mature all-in-one bundler for complex production builds

## Facets
- artifact type: library
- maturity: stable
- function: compiler, parser, build-tool, developer-tools
- domain: web-development, compilers, frontend, developer-tools, programming-languages
- platform: rust, cross-platform, cli, wasm, windows
- tags: typescript, javascript, ecmascript, babel-alternative, transpiler, minifier, bundler, swc, nodejs, macos, linux

## Member repositories
- swc-project/swc (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:58.739675+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:27:45.537996+00:00, confidence not recorded.
  - readme: https://github.com/swc-project/swc (fetched 2026-08-28T04:11:58.739675+00:00, sha d8e961e5f39f)
  - homepage: https://swc.rs (fetched 2026-08-29T07:48:27.981449+00:00, sha db04133d2fcc)
  - site_page: https://swc.rs/docs/getting-started (fetched 2026-08-29T07:48:27.983855+00:00, sha 0cfd81a5552d)
  - site_page: https://swc.rs/docs/customers (fetched 2026-08-29T07:48:27.985570+00:00, sha e7e4998d0cce)
  - site_page: https://rustdoc.swc.rs/swc (fetched 2026-08-29T07:48:27.987289+00:00, sha 5d7223d4c833)
- Data as of 2026-08-30T08:39:29.467469+00:00.