The Oxidation Compiler is building a set of tools for the JavaScript / TypeScript language.

These tools include:

• Parser - Done
• Linter - Work in progress
• Formatter
• Transpiler
• Minifier

The goal of this project is to:

• Create a really fast native program by using the Rust programming language
• Provide the basic building blocks for creating your own tools by having good API designs
• Provide good documentation on learning Rust and compiler techniques

Performance issues are considered as bugs in this project.

This project is an invitation for you to come and learn Rust with us.

Contributions are welcome and highly appreciated. To get started, check out CONTRIBUTING.md.

If you do not have the time to contribute code, you can still participate by:

• star and watch this project
• join us on Discord
• follow me on twitter
• provide your wisdom in discussions

Oxc has a fully working parser and a prototype for the linter right now.

The current objectives are:

• A MVP (Most Viable Product) for the linter.
• Improve the parser for real usage. Areas include:
  • Performance
  • API
  • Pass more conformance tests

The cargo coverage command currently reports the following summary

Test262 Summary:
AST Parsed     : 43934/43934 (100.00%)

Babel Summary:
AST Parsed     : 2045/2057 (99.42%)

TypeScript Summary:
AST Parsed     : 4291/4861 (88.27%)

(The parser is failing some of the TypeScript recoverable parser tests.)

See benchmark for details. Hyperfine results on an Intel i7 6-core are:

Benchmark 1: oxc
  Time (mean ± σ):      34.6 ms ±   1.3 ms    [User: 160.1 ms, System: 67.2 ms]
  Range (min … max):    31.8 ms …  40.9 ms    75 runs

Benchmark 2: rome
  Time (mean ± σ):     147.4 ms ±   3.7 ms    [User: 695.4 ms, System: 72.4 ms]
  Range (min … max):   141.9 ms … 153.8 ms    20 runs

Benchmark 3: eslint
  Time (mean ± σ):      2.905 s ±  0.185 s    [User: 4.387 s, System: 0.254 s]
  Range (min … max):    2.710 s …  3.287 s    10 runs

Summary
  'oxc' ran
    4.26 ± 0.20 times faster than 'rome'
   83.94 ± 6.25 times faster than 'eslint'

• My small tutorial on how to write a JavaScript Parser in Rust
• Crafting Interpreters
• [Create an issue and nsert your inspirational learning resources here]

This project is incubated from the help of these great mentors and their projects:

• Rome Tools - @MichaReiser, @ematipico
• Ruff - @charliermarsh
• quick-lint-js - @strager
• elm-review - @jfmengels
• @domonji for contribution to the TypeScript parser

MIT

Licenses are list in THIRD-PARTY-LICENSE

This project partially copies code from the following projects: