2ad0af9e91
swc_ecma_transforms_compat: - `classes`: Fast-path. - `destructuring`: Fast-path. - `sticky_regex`: Fast-path. - `spread`: Fast-path. - `shorthand`: Fast-path. - `typeof_symbol`: Fast-path. - `block_scoped_functions`: Fast path. - `duplicate_keys`: Use fxhash. - `instance_of`: Fast path. - `reserved_words`: Make string comparison efficient. |
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|---|---|---|
| .cargo | ||
| .github | ||
| .vscode | ||
| atoms | ||
| babel | ||
| benches | ||
| bundler | ||
| common | ||
| ecmascript | ||
| examples | ||
| integration-tests | ||
| macros | ||
| native | ||
| node/base | ||
| node-swc | ||
| scripts | ||
| spack | ||
| src | ||
| testing | ||
| tests | ||
| visit | ||
| wasm | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .npmignore | ||
| .rustfmt.toml | ||
| .travis.yml | ||
| ARCHITECTURE.md | ||
| Cargo.toml | ||
| CONTRIBUTING.md | ||
| deny.toml | ||
| LICENSE-APACHE | ||
| LICENSE-MIT | ||
| package.json | ||
| README.md | ||
| rust-toolchain | ||
| tsconfig.json | ||
Make the web (development) faster.
swc is a super-fast typescript / javascript compiler written in rust.
Documentation
Check out the documentation in the website.
Features
Please see comparison with babel.
Performance
The lower bound of the speedup compared to babel is 18. The benchmarks were run on Macbook pro, dual core, 2.3GHz Intel Core i5, 16 GB ram
| performance | |
|---|---|
| swc (es3) | 761 ops/sec ±0.23% (89 runs sampled) |
| swc (es2015) | 800 ops/sec ±1.02% (87 runs sampled) |
| swc (es2016) | 2123 ops/sec ±0.84% (88 runs sampled) |
| swc (es2017) | 2131 ops/sec ±1.13% (90 runs sampled) |
| swc (es2018) | 2981 ops/sec ±0.25% (90 runs sampled) |
| swc-optimize (es3) | 712 ops/sec ±0.21% (86 runs sampled) |
| babel | 41.75 ops/sec ±8.07% (56 runs sampled) |
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:
- Giving developer time on the project. (Message us on Github discussions (preferred) or Slack for guidance!)
- Slackin for swc
- Giving funds by becoming a sponsor (see below)!
Open Collective Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]
Gold Sponsors
Silver Sponsors
Bronze Sponsors
Backers
Become a backer and get your image on our README on Github with a link to your site.
Contributing
See CONTRIBUTING.md. You may also find the architecture documentation useful (ARCHITECTURE.md).
License
swc is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.