mirror of
https://github.com/swc-project/swc.git
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117 lines
4.6 KiB
Markdown
117 lines
4.6 KiB
Markdown
<p align="center">
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<a href="https://swc-project.github.io/">
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<img alt="babel" src="https://raw.githubusercontent.com/swc-project/logo/master/swc.png" width="546">
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</a>
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</p>
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<p align="center">
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Make the web (development) faster.
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</p>
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<p align="center">
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<a href="https://www.npmjs.com/package/@swc/core">
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<img alt="npm Downloads" src="https://img.shields.io/npm/dw/@swc/core">
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</a>
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<a href="https://crates.io/crates/swc_ecma_parser">
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<img alt="undefined" src="https://img.shields.io/crates/d/swc_ecma_parser.svg?label=crates.io%20dowloads">
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</a>
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</p>
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<p align="center">
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<a href="https://travis-ci.org/swc-project/swc">
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<img alt="Travis Status" src="https://img.shields.io/travis/swc-project/swc/master.svg?label=travis&maxAge=43200">
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</a>
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<a href="https://codecov.io/gh/swc-project/swc">
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<img alt="Coverage" src="https://codecov.io/gh/swc-project/swc/branch/master/graph/badge.svg">
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</a>
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</p>
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<h2 align="center">Supporting swc</h2>
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<p align="center">
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<a href="#backers">
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<img alt="Backers on Open Collective" src="https://opencollective.com/swc/tiers/backer/badge.svg?label=backer&color=brightgreen" />
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</a>
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<a href="#gold-sponsors">
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<img alt="Gold sponsors on Open Collective" src="https://opencollective.com/swc/tiers/gold-sponsors/badge.svg?label=Gold%20sponsors&color=brightgreen"/>
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</a>
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<a href="#silver-sponsors">
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<img alt="Silver sponsors on Open Collective" src="https://opencollective.com/swc/tiers/silver-sponsors/badge.svg?label=Silver%20sponsors&color=brightgreen"/>
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</a>
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<a href="#bronze-sponsors">
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<img alt="Bronze sponsors on Open Collective" src="https://opencollective.com/swc/tiers/bronze-sponsors/badge.svg?label=Bronze%20sponsors&color=brightgreen"/>
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</a>
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</p>
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swc is a community-driven project, and is maintained by a group of [volunteers](https://opencollective.com/swc#team). If you'd like to help support the future of the project, please consider:
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- Giving developer time on the project. (Message us on [Slack](https://swc-org.slack.com/) for guidance!)
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- [Slackin for swc](https://swc-slackin.herokuapp.com)
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- Giving funds by becoming a sponsor (see below)!
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## Open Collective Sponsors
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Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/swc#sponsor)]
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<h2 id="gold-sponsers" align="center">Gold Sponsors</h2>
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<a href="https://opencollective.com/swc">
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<img src="https://opencollective.com/swc/tiers/gold-sponsers.svg?avatarHeight=64">
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</a>
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<h2 id="silver-sponsers" align="center">Silver Sponsors</h2>
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<a href="https://opencollective.com/swc">
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<img src="https://opencollective.com/swc/tiers/silver-sponsers.svg?avatarHeight=64">
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</a>
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<h2 id="bronze-sponsers" align="center">Bronze Sponsors</h2>
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<a href="https://opencollective.com/swc">
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<img src="https://opencollective.com/swc/tiers/bronze-sponsers.svg?avatarHeight=64">
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</a>
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<h2 id="backers" align="center">Backers</h2>
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<a href="https://opencollective.com/swc">
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<img src="https://opencollective.com/swc/tiers/backer.svg?avatarHeight=64">
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</a>
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[Become a backer](https://opencollective.com/swc#backer) and get your image on our README on Github with a link to your site.
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# Documentation
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Check out the documentation [in the website](https://swc-project.github.io/docs/installation).
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# Features
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Please see [comparison with babel](https://swc-project.github.io/docs/comparison-babel).
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# Performance
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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
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| | performance |
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| ------------------ | :------------------------------------: |
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| swc (es3) | 761 ops/sec ±0.23% (89 runs sampled) |
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| swc (es2015) | 800 ops/sec ±1.02% (87 runs sampled) |
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| swc (es2016) | 2,123 ops/sec ±0.84% (88 runs sampled) |
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| swc (es2017) | 2,131 ops/sec ±1.13% (90 runs sampled) |
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| swc (es2018) | 2,981 ops/sec ±0.25% (90 runs sampled) |
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| swc-optimize (es3) | 712 ops/sec ±0.21% (86 runs sampled) |
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| babel | 41.75 ops/sec ±8.07% (56 runs sampled) |
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md). You may also find the architecture
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documentation useful ([ARCHITECTURE.md](ARCHITECTURE.md)).
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## License
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swc is primarily distributed under the terms of both the MIT license
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and the Apache License (Version 2.0).
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See LICENSE-APACHE and LICENSE-MIT for details.
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[babel]: https://github.com/babel/babel
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[closure compiler]: https://github.com/google/closure-compiler
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[rust]: https://www.rust-lang.org
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